49y^2 - 28y + 4 using identities
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USING THE IDENTITY
A^2-2AB+B^2= (A-B)^2
49Y^2-28Y+4=(7Y-2)^2
A^2-2AB+B^2= (A-B)^2
49Y^2-28Y+4=(7Y-2)^2
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(7y)^2-2*7y*2+(-2)^2
(7y-2)^2
(a-b)^2=a^2-2ab+b^2
(7y-2)^2
(a-b)^2=a^2-2ab+b^2
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