Mathematics, 06.09.2020 05:01 youngchapo813p8d9u1

If B = -m +1 - 9m2 and A = m + 9, find an expression that equals 2B – 2A in standard form.
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If B = -m +1 - 9m2 and A = m + 9, find an expression that equals 2B – 2A in standard form.
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