Question

2х +6 – 5х при х=-5.​

Answer 1

2х +6 – 5х = 6-3х = 6-3×(-5)=6+15=21

Answer 2

To evaluate the expression 2x + 6 - 5x when x = -5, substitute -5 for x in the expression and perform the calculations.

2(-5) + 6 - 5(-5) = -10 + 6 + 25 = 21

Therefore, when x = -5, the value of the expression 2x + 6 - 5x is 21.