Math, asked by singh7262, 9 months ago

factorise:
(81x²-126xy+49y²)-25z²

Answers

Answered by thakkaryug89

8

Answer:

Hi friend,

81x²-198xy+121y²=(9x)²-(2×9x×11y)+(11y)²=(9x-11y)²=(9x-11y)(9x-11y)

{as (a-b)²=a²-2ab+b²}

Hope this helps you..

Step-by-step explanation:

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