Question

Упростите пжж!!!!!2 х(1 + х ) - ( х - 2 ) ( х +4) (у + 2 )² - 2 у (у +2)​

Answer 1

$2x(1 + x) - (x - 2)(x + 4) = 2x + 2 {x}^{2} - ( {x}^{2} + 2x - 8) = \\ \\ = 2x + 2 {x}^{2} - {x}^{2} - 2x + 8 = {x}^{2} + 8$

${(y + 2)}^{2} - 2y(y + 2) = {y}^{2} + 4y + 4 - 2 {y}^{2} - 4y = - {y}^{2} + 4 = \\ \\ = (2 - y)(2 + y)$

Answer 2

Ответ:

1)x²+8

2)-y²+4

Нужно раскрыть скобки. (a+b)²=a²+2ab+b²

Answer 3

I can help you with math problems, among other things. It looks like you want me to simplify an expression. Here is the answer:

$$2x(1+x)-(x-2)(x+4)+(y+2)^2-2y(y+2)$$

$$=2x+2x^2-x^2-4x-2x-8+y^2+4y+4-2y^2-4y$$

$$=x^2-6x+y^2-8$$

I hope this helps. If you have any other questions, feel free to ask me.Ответь+подробно.++Упростите+пжж!!!!!2+х(1+++х+)+-+(+х+-+2+)+(+х++4)+(у+++2+)²+-+2+у+(у++2)​+