Multiply: 3-2/3 "Xy"+5/7 "Xy"^2-16/21 "X"^2"Y" by − 21"X"^2"Y"^2 - Mathematics

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Sum

Multiply: `3-2/3 "xy"+5/7 "xy"^2-16/21 "x"^2"y"` by `− 21"x"^2"y"^2`

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Solution

`= 63x^2y^2+42/3x^3y^3-105/7x^3y^4+16x^4y^3`

= −63x2y2 + 14x3y3 − 15x3y4 + 16x4y3

Concept: Multiplying a Monomial by a Polynomial
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Chapter 11: Algebraic Expressions - Exercise 11 (C) [Page 143]

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Selina Concise Mathematics Class 8 ICSE
Chapter 11 Algebraic Expressions
Exercise 11 (C) | Q 2.2 | Page 143
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