factorise 36x^2 - 84xy+ 49y^2
Answers
Answered by
38
In this question we will use identity (a-b)^2
36x^2-84xy+49y^2
=(6x)^2-2(6x)(7y)+(7y)^2
=(6x-7y)^2
=(6x-7y)(6x-7y)
36x^2-84xy+49y^2
=(6x)^2-2(6x)(7y)+(7y)^2
=(6x-7y)^2
=(6x-7y)(6x-7y)
Answered by
12
Answer :
______________________________________________________________
36x² - 84xy + 49y²
(6x)² + (7y)² - 2 (6x) (7y)
Using identity :
a² + b² - 2xy = (x-y)²
we get ,
( 6x - 7y)²
(6x - 7y) ( 6x-7y)
______________________________________________________________
© Harry Inc.
______________________________________________________________
36x² - 84xy + 49y²
(6x)² + (7y)² - 2 (6x) (7y)
Using identity :
a² + b² - 2xy = (x-y)²
we get ,
( 6x - 7y)²
(6x - 7y) ( 6x-7y)
______________________________________________________________
© Harry Inc.
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