Question

factorise 9^2+ 2xy + ( y^2 / 9 ) by using identity a^2 + 2ab + b^2 = (a + b )^2
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Answer 1

Step-by-step explanation:

9x^2+ 2xy + ( y^2 / 9 )

By using (a+b)^2 formula

=(3x+y/3)^2

I guess the question is not correctly written...

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Answer 2

Answer:

see figure in attachment.

hope it's helpful to you.