9xsquare-4(y+2x)square

Asked by Vidhi Srivastava | 3rd May, 2013, 09:35: PM

Expert Answer:

9xsquare-4(y+2x)square    = 0
 
[3x]^2-[2(y+2x)]^2 =0
Using a^2 - b^2 = (a-b)(a+b)
Hence, (3x-2y-4x) (3x+2y+4x) =0
(-2y-x)(2y+7x) = 0
Hence, y = -x/2 or y = -7x/2 

Answered by  | 4th May, 2013, 03:47: AM

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