5x2 7y2=5x2 7y2 #160; #160; #160; #160; #160; #160; #160; #160; #160; #160; #160; #160; #160; #160; #160;=5x 7y5x+7y ...

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Factorize:5 x...

Question

Factorize:
5x² − 7y²

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Solution

$5 x^{2} - 7 y^{2} = {(\sqrt{5} x)}^{2} - {(\sqrt{7} y)}^{2} = (\sqrt{5} x - \sqrt{7} y) (\sqrt{5} x + \sqrt{7} y)$

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