Question

Find the value of
1 . 82 square minus 18 square

Answer 1

Hi ,

*******************************************

We know the algebraic identity,

a² - b² = ( a + b )( a - b )

*******************************************

Now ,

Value of 82² - 18²

= ( 82 + 18 )( 82 - 18 )

= 100 × 64

= 6400

I hope this helps you.

: )