Question

Find the value of this expression if x=1 and y=4

xy^2/7

Answer 1

2 2/7

Explanation:

What we know:

x = 1, and y = 4

The equation is xy^2/7

1(4)^2/7

4^2/7

16/7 = 2 2/7

Answer 2

xy^2/7 = (1)(4)^2/7 = 4^2/7 = 7 square root 4^2 = 7 square root 16 = 7 square root 4