Question

If x = 7, find the value of
a) x2
b) (x + 3)*2

Answer 1

a) 49

b) 100 (I'm assuming that the 2 was supposed to be a square)

Explanation:

Substitute the value in for x (the value being 7):

7² = 49

(7 + 3)² = (10)² = 100