Question

Here is an identity.

x²
x2 - y2 = (x + y)(x - y)
1932 – 72
Use the identity to work out the value of
You must show your working.

Answer 1

anwser: 37,200

step by step explanation:

Answer 2

The answer is 37 200.

Explanation:

The steps are :

x² - y² = (x + y)(x - y)

193² - 7² = (193 + 7)(193 - 7)

= (200)(186)

= 37 200