Question

Factorise 16x^2-121y^2​

Answer 1

Algebra Examples

Rewrite 16x2 16 x 2 as (4x)2 ( 4 x ) 2 . Rewrite 121y2 121 y 2 as (11y)2 ( 11 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=4x a = 4 x and b=11y b = 11 y . Multiply 11 by −1 .

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