Câu 2: Cho số phức z = -1 + 3i. Phần thực, phần ảo của z− là

A. -1 và 3(câu này ko bt,thông cảm)

B. -1 và -3

C. 1 và -3

D. -1 và -3i.(câu này ko rõ)

Câu 3: Môđun của số phức z thỏa mãn z− = 8 - 6i là

A. 2

B. 10

C. 14

D. 2√7

Câu 4: Tìm các số thực x, y sao cho (x – 2y) + (x + y + 4).i = (2x + y) + 2yi.

A. x = 3, y = 1

B. x = 3, y = -1

C. x = -3, y = -1

D. x = -3, y = 1

TL

a -1 và 3 nha

HT

=1.12457801x10^13 nha

HT

ấn máy tính là ra ạ]

100000000000000000000000000000000 

+

100000000000000000000000000000000

=

200000000000000000000000000000000

100000000000000000000000000000000 +100000000000000000000000000000000 =200000000000000000000000000000000 

999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999799999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999991999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999299999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999939999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999994999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999995999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999969999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999979999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999899999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999

cái này ko chỉ có mỗi số 8 đâu chị ey

trời ơi cái này nhìn lé con mắt  con bt hông cái này mà đố cô kiểu này thì cô cho ăn dép báo cáo

TL : Như vậy, sẽ cần 182.839 ngày để có thể bán được 1 tỷ gói mè. Khi đó, 182.839 ngày = gần 6 tháng 3 ngày, đó là thời gian để bán 1 tỷ gói mè.

nhà tôi không bán mè nhà tôi bán kem đánh răng

= -503256400

EZ

62834738 + 5686688 - 676767 + 78859 - 5876798 + 678756 + 775689 - 566757565 = ???

____________________cảm ơn______________________

ssjmxnx

\(y'=\left(e^x\right)'.cosx+e^x.\left(cosx\right)'=e^x\left(cosx-sinx\right)\)

=> Chọn A

9999:9999=1

9999 : 9999 = 1

Lấy máy tính ra tính đi bn ✿

6 x 10²⁴