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3 years ago

12

What is 8a^3b^-2 when a=4 and b=-5

2 answers:

Softa [21]3 years ago

7 0

8(4)^3=512 5^-2= 1/25

tiny-mole [99]3 years ago

5 0

8a $a^{3} +3b-2$
= 8x $4^{3} -3x(-5)-2$
= 64x8+15-2
=192+13
205

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