Simplyify the expression -2x^2(4x-3).

-8x^3 + 6x^2

Step-by-step explanation:

Multipy each term in the parenthesis by -2x^2

-2x^2 x 4x - 2x^2 x (-3)

calculate the product

-8x^3 - 2x^2 x (-3)

multiplying two negatives equals a positive: (-)x(-)=(+)

-8x^3 + 2x^2 x 3

calculate the product

-8x^3 + 6x^2

we don't have enough info to solve this

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x