Question

What is the missing polynomial? – (20 – 4x – 5x2) = 20 – 7x2

Answer 1

Hi,

Here is my work. I have factored an expression.


`- (20 - 4x - 5x * 2) * 20 - 7x * 2 \\ - (20 - 4x - 10x) * 20 - 7x * 2 \\ - (20 - 4x - 10x) * 20 - 14x \\ - 2((20 - 4x - 10x) * 10 + 7x)\\ - 2((20 - 14x) * 10 + 7x) \\ - 2(200 - 140x + 7x) = - 2(200 - 133x)`


Hope this helps.
r3t40

Answer 2

40-4x-12x^2

Explanation: