Question

factoruse the fellowing using suitable identities:4x square - 81y square

Answer 1

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Answer 2

Hi Mate !!

Here is your answer :

Question : Factories the following using suitable identities : 4x² - 81y² .

answer

( 2x + 9y ) ( 2x - 9y ).

questions

4x² - 81y² .

step by step deviation

Solution :

4x² - 81y² = (2x)² - (9y)²

(2x)² - (9y)² is of the form a² - b² .

And , we know that a² - b² = ( a + b ) ( a - b ).

here we using this formula a² - b² = ( a + b ) ( a - b ).

(2x)² - (9y)²

= ( 2x + 9y ) ( 2x - 9y ).

therefore the identity is
( 2x + 9y ) ( 2x - 9y ).


Hope it helps you ♥

By rishi403.

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