Question

What is the value of the expression: x2 + y2 + x - y

when x = -1 and y = 3

Question 1 options:

6


8


12


16

Answer 1

Answer: 6

Explanation:

x^2+y^2+x-y

Put x=-1 and y=1

(-1)^2+(3)^2+(-1)-(3)

1+9-1-3

10-4

6