Question

Your answer should be a polynomial in standard form.
(-8a2 - 1)(3a– 5) =

Answer 1

Apply FOIL and pay attention to plus\minus rules

`(-8a^2 - 1)(3a-5)\\\left(-8a^2\right)\cdot \:3a+\left(-8a^2\right)\left(-5\right)+\left(-1\right)\cdot \:3a+\left(-1\right)\left(-5\right)\\-8\cdot \:3a^2a+8\cdot \:5a^2-1\cdot \:3a+1\cdot \:5\\-24a^3+40a^2-3a+5`

Therefore, the answer is:

`-24a^3+40a^2-3a+5`

Answer 2

-24a³ +40a² -3a +5

Explanation:

The distributive property applies.

(-8a² -1)(3a -5) = -8a²(3a -5) -1(3a -5)

= -24a³ +40a² -3a +5