Question

a raise to power 2 -81 factorise​

Answer 1

Answer:

Rewrite 81 as 92 . 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=9 .

Step-by-step explanation:

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