Mathematics: + 2xy + when x = -2 and y = -3

+ 2xy + when x = -2 and y = -3 - id22310050230, arielpraczko1

payshencec21

14.02.2022

Step-by-step explanation:

x² + 2xy + y²

i) substitute x = -2 into the expression

(-2)² + 2(-2)y + y²

= 4 - 4y + y²

ii) substitute y = -3 into the expression

4 - 4y + y²

= 4 - 4(-3) + (-3)²

= 4 + 12 + 9

iii) add the numbers

4 + 12 + 9

= 16 + 9

= 25

0,0(0 оценок)

sbelgirl2000

25.07.2021

Is there a letter missing in between by, and where? As in, what variable is the total cost represented by?

0,0(0 оценок)