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Using the identity , find the following...1. (5p-7q) (5p-7q){Don't send irrelevant answers Warning : it would be reported..} |
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Answer» (5p-7q)² we KNOW that (a-b)²=a²+b²-2ab so,(5p-7q)²=(5p)²+(7q)²-2(5p)(7q) =25p²+49q²-70pq |
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