Question

The expression −8x^3(7x^6 − 3x^5) is equivalent to:

A. −56x^9 + 24x^8
B. −56x^9 − 24x^8
C. −56x^18 + 24x^15
D. −56x^18 − 24x^15
E. −32x^4

Answer 1

`-8x^3(7x^6-3x^5)=-56x^9+24x^8`

Answer 2

`-8x^3(7x^6 - 3x^5) =(-8x^3) \cdot 7x^6 - (-8x^3) \cdot 3x^5 = \\ \\ =-56x^(3+6) +24x^(3+5)= -56x^(9) +24x^(8) \\ \\Answer : \ A. \ \ -56x^9 + 24x^8`