Question

16.Simplify 2x^2(3x - 4) + 5x(x^2+ 3x - 2) – 3(x^3– 5x – 2) and find its value for x = -1.

Answer 1

Answer:

2x²(3x-4)+5x(x²+3x-2)-3(x³-5x-2).

6x³-8x²+5x³+15x²-10x-3x³+15x+6.

6x³+5x³-3x³-8x²+15x²+15x-10x+6.

11x³-3x³+7x²+5x+6.

8x³+7x²+5x+6.

x=-1.

8(-1)³+7(-1)²+5(-1)+6.

8(-1)+7(1)-5+6.

-8+7-5+6.

-1-5+6.

-6+6.

0.

I think this is your answer.

Answer 2

Step-by-step explanation:

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