SOLUTION: Please help factor completly 49x^2-28xy+4y^2

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Question 55095: Please help factor completly 49x^2-28xy+4y^2
Answer by anjulasahay(30) About Me  (Show Source):
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Please help factor completly 49x^2-28xy+4y^2
ans.
given 49x^2-28xy+4y^2
= (7x)^2-2*(7x)*(2y)+(2y)^2
= (7x-2y)^2
since( a - b )^2 = a^2-2ab+b^2