Question

x 2 – 81 ( y – z) 2 FACTORIZE

Answer 1

Answer:

Precalculus Examples Rewrite 81y2 81 y 2 as (9y)2 ( 9 y ) 2 . Since both terms are perfect squares, factor using the difference of squares formula, a2−b2=(a+b)(a−b) a 2 - b 2 = ( a + b ) ( a - b ) where a=x and b=9y b = 9 y .