Question

Evaluate:

(X + Y) (X2+ 5) – 2XY if X = 1 and Y = -1.

Answer 1

Answer:

2

Step-by-step explanation:

(X + Y) (X2+ 5) – 2XY

= (1 - 1)(1^2 + 5) - 2(1)(-1)

= 0 + 2 = 2