Question

What is the value of y2 – x2 when y = 6 and x = 5?

Answer 1

y^2 - x^2 = 11

Explanation:

y^2 - x^2 = ?

Substitute.

y = 6

x = 5

Becomes:

6^2 - 5^2 = ?

Solve.

6^2 = 6 x 6

6 x 6 = 36

5^2 = 5 x 5

5 x 5 = 25

36 - 25 = 11