Math, asked by aakash14311, 1 year ago

a square - 81 factorise solution

Answers

Answered by Panzer786
24
Hey !!

a² - 81

(a)² - (9)²

We know that,

( x )² - (y )² = ( x + y ) ( x - y ).

So,

(a)² - (9)²

( a + 9 ) ( a - 9 )

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Answered by niranjana0987ab
6

(a²-81) = a²-9²

=(a-9)*(a+9)


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