Question

11х-9 при х=1,2-5(2х+1) при х=-1​

Answer 1

Ответ:

1)4,2

2)5

Объяснение:

11*1,2-9=13,2-9=4,2

-5*(2*(-1)+1)=-5*(-2+1)=-5*(-1)=5

Answer 2

To evaluate the expression 11x - 9 when x = 1, and -5(2x + 1) when x = -1, we can substitute the given values into the expressions and simplify them.

1. Evaluating 11x - 9 when x = 1: Substitute x = 1 into the expression: 11(1) - 9 = 11 - 9 = 2

   Therefore, 11x - 9, when x = 1, is equal to 2.

2. Evaluating -5(2x + 1) when x = -1: Substitute x = -1 into the expression: -5(2(-1) + 1) = -5(-2 + 1) = -5(-1) = 5

   Therefore, -5(2x + 1), when x = -1, is equal to 5.

To summarize:

• When x = 1, 11x - 9 is equal to 2.
• When x = -1, -5(2x + 1) is equal to 5.