Question

2х+2хy+8yквадрат х=-2,5 ,y=-2

Answer 1

Ответ:

121

Объяснение:

=(-5+10-16)^2=(-11)^2=121

Answer 2

To calculate the expression 2x + 2xy + 8y^2 when x = -2.5 and y = -2, you can simply substitute these values into the equation and then simplify:

2x + 2xy + 8y^2

Let's plug in the values:

2(-2.5) + 2(-2.5)(-2) + 8(-2)^2

Now, perform the calculations step by step:

= -5 + 2(5) + 8(4) = -5 + 10 + 32 = 5 + 32 = 37

So, when x = -2.5 and y = -2, the expression 2x + 2xy + 8y^2 equals 37.