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Question
Multiply: `3-2/3 "xy"+5/7 "xy"^2-16/21 "x"^2"y"` by `− 21"x"^2"y"^2`
Sum
Solution
`= 63x^2y^2+42/3x^3y^3-105/7x^3y^4+16x^4y^3`
= −63x2y2 + 14x3y3 − 15x3y4 + 16x4y3
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Multiplying a Monomial by a Polynomial
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