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ken-turner_60b4adec7b03b
ken-turner_60b4adec7b03b
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ken-turner_60b4adec7b03b
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May 2021
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(3x+7)(7x-3) = 21x^2 - 9x + 49x - 21 = 21x^2 + 40x - 21
in
algebra....................................?
Comment by
ken-turner_60b4adec7b03b
May 2021
