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Mathematics, 07.11.2020 01:40 zuleidysnegron

If C=3m^{2}+4m+5C=3m 2
+4m+5 and D=3m+7,D=3m+7, find an expression that equals 2C+2D2C+2D in standard form.

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If C=3m^{2}+4m+5C=3m 2
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