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(a) Find the square of (4x2 – 7y2 ) using an appropriate identity. |
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Answer» ONG>ANSWER: a2-b2=(a+b)(a-b) a=4x, b=7y (4x+7y)(4x-7y) 16x2-28xy+28xy- 49y2 16x2-49y2 |
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