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Simplify : (7 + 4)^2 - (7x-4y)^2 |
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Answer» PRODUCT of (7X−4Y) and (3X−7Y) (7x−4y) (3x−7y) ⇒(7x)(3x)−(7x)(7y)−(4y)(3x)+(4y)(7y) ⇒21x2−49xy−12xy+28y2 ⇒21x2+28y2−61xy |
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