Question

Evaluate the polynomial when x = 7 and y = -2

X^2 - y^2+xy

Answer 1

Hello

Evaluate the polynomial x²-y²+xy when x=7 and y=-2
(7)² - (-2)² +(7)(-2) = 49-4-14 =49-18 = 31
Important note : (-2)²=(-2)(-2) =4