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OpenStudy (anonymous):
can anyone explain to me how 25(4a^2-4ab+b^2) = 25(2a-b)^2? thankyouu!
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OpenStudy (anonymous):
\[(2a-b)^2=(2a)^2-2(2a)(b)-b^2 = 4a^2-4ab-b^2\]
OpenStudy (anonymous):
25(4a^2-4ab+b^2) = 25[ (2a)^2-2(2a)(b)+b^2]=25[2a-b]^2
OpenStudy (anonymous):
thank-you
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