Question

-5x(2-х)-3(х+1)+2(6х-2)+7 при х=2​

Answer 1

Ответ:

18, решение в файле

Объяснение:

Answer 2

To evaluate the expression -5x(2-x)-3(x+1)+2(6x-2)+7 when x = 2, we substitute the value of x into the expression and perform the calculations.

Let's substitute x = 2 into the expression:

-5(2-2)-3(2+1)+2(6(2)-2)+7

Simplifying each part of the expression:

-5(0) - 3(3) + 2(12-2) + 7

0 - 9 + 2(10) + 7

0 - 9 + 20 + 7

-9 + 20 + 7

11 + 7

18

Therefore, when x = 2, the expression -5x(2-x)-3(x+1)+2(6x-2)+7 equals 18.