Math, asked by navyapandey144, 1 month ago

7root2= 2x + 9y give the solution

Answers

Answered by pradyun2007

1

Answer:

given

Step-by-step explanation:

given equation is (2x+9y)(2x-9y)

it is in form of (a+b) (a-b)

we know (a+b) (a-b) =a^2-b^2

here a=2x,b=9y

so a^2-b^2=(2x)^2-(9y)^2=4x^2-81y^2

THEREFORE YOUR ANSWER IS

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