Tính :
1/ ( -6 -2) . ( -6 +2)
2/ ( 7.3 -3 ) : (-6)
3/ ( -5 + 9). (-4)
4 /72 : ( -6 . 2 + 4 )
5/ -3 .7 -4 . ( -5 ) +1
6/ 18-10 : ( +2) -7
7/ 15 : ( -5) . (-3) -8
8/ ( 6.8 -10 : 5 ) + 3 . (-7)
Ai nhanh mk sẽ tick cho . Cần gấp
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1=32
2=-3
3=-16
4=-9
5=0
6=6
7=1
8=25
nhớ tick cho mình nha
* (-6 - 2) . (-6 + 2)
= -8 . -4
= 32
*(7 . 3 - 3) : (-6)
= 18 : (-6)
= -3
k cho mik nhe
1: =72/90+65/90=137/90
2: =24/56-77/56=-53/56
3: =-7/10+4/5=1/10
4: =15/100-4/100=11/100
5: =4/6-5/6=-1/6
6: =10/40-15/40-76/40=-81/40
7: =-9/10+7/18
=-81/90+35/90=-46/90=-23/45
8: =27/90-55/90=-28/90=-14/45
9: =36/60-50/60-35/60=-49/60
10: =-4/9+5/6-3/8
=-32/72+60/72-27/72
=1/72
1) (-6-2)*(-6+2)=-8*(-4)=32
2) (7*3-3):(-6)=18:(-6)=-3
3) (-5+9)*(-4)=4*(-4)=-16
4) 72:(-6*2+4)=72:(-8)=-9
5) -3*7-4*(-5)+1=-21-(-20)+1=-21+20+1=0
6) 18-10:(+2)-7=18-5-7=6
7) 15:(-5)*(-3)-8=9-8=1
8) (6*8-10:5)+3*(-7)=48-2-21=25
\(\dfrac{8^{14}}{4^4.64^5}=\dfrac{\left(2^3\right)^{14}}{\left(2^2\right)^4.\left(2^5\right)^5}=\dfrac{2^{42}}{2^8.2^{25}}=2^{42-\left(8+25\right)}=2^9\)
\(\dfrac{9^{10}.27^7}{81^7.3^{15}}=\dfrac{\left(3^2\right)^{10}.\left(3^3\right)^7}{\left(3^4\right)^7.3^{15}}=\dfrac{3^{20}.3^{21}}{3^{28}.3^{15}}=\dfrac{3^{20+21}}{3^{28+15}}=\dfrac{3^{41}}{3^{41}.3^2}=\dfrac{1}{3^2}=\dfrac{1}{9}\)