Mathematics

Mathematics, 09.09.2020 20:01, Misspaige4453

Add the following algebraic expressions using horizontal method: a) $x-y-5, 3x+7y-9, and, 10-3x+11\\$ b) $5x^{2}y, -9x^{2}, and, 6x^{2}y$ c) d) 8-2mn, 10-7mn, and 6 - 15mn Add the following algebrian expression using column method: a) b) c) d) $y^{3} -2y^{2}-7y+3, -8y^{3} +4y^{2}+6y-12, and, 9-5y -y^{3}+10y^{2}$ PLS HELP

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