Question

7(х-7)-3(х-3) 2х(х+1)-4х(2-х)

Answer 1

Ответ:

7(х-7)-3(х-3)=7х-49-3х+9=4х-40=4(х-10)

2х(х+1)-4х(2-х)=2х²+2х-8х+4х²=6х²-6х=6х(х-1)

Объяснение:

Answer 2

Ответ:

-2x-49+22$x^{4}$

Объяснение:

7(x-7)-3(x-3)*2x(x+1)-4x(2-x) = 7*x+7*(-7)+(-3)*x+(-3)*(-3)*2x*x+2x*1-4x*2+(-4x)*(-x) = 7x-49-3x+9*$2x^{2}$+2x-8x+4x² = 7x-49-3x+18x²+2x-8x+4x² = 7x-3x+2x-8x-49+18x²+4x² = -2x-49+22$x^{4}$

Answer 3

Let's simplify the given expressions step by step:

1. $7(x-7) - 3(x-3)$: Expand the expressions within the parentheses and then simplify: $7x - 49 - 3x + 9$ $4x - 40$

2. $2x(x+1) - 4x(2-x)$: Expand the expressions within the parentheses and then simplify: $2x^2 + 2x - 8x + 4x^2$ $6x^2 - 6x$

So, the simplified expressions are: $4x - 40$ $6x^2 - 6x$