Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
1000+ 2000= 3000
Mik đầu tiên
Mik chọn quà 1, bạn k cho mik nha
gọi (d) y=x 0 y x 1 2 1 -1 2 -2
Thay x=1=>y=1=> (1;1)
Thay x=2=>y=2=> (2;2)
gọi (d1) y=-2x
Thay x=-1=> y=2=> (-1;2)
Thay x=1=>y=-2=> (1;-2)
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Ta có : \(A=\left|x-5\right|-\left|x-7\right|\ge\left|x-5-x+7\right|=2\)
Vậy \(A_{min}=2\) khi \(5\le x\le7\)
\(\sqrt{2x+5}=11\Leftrightarrow2x+5=11^2\)
=> 2x + 5 = 121
=> 2x = 121 - 5 = 116
=> x = 58
k kết bạn với bạn rôi do .
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