Simplify : (4x – 5y) (5x – 4y)

Simplify : (4x – 5y) (5x – 4y)

Sum

(4x – 5y) (5x – 4y)

= 4x(5x – 4y) – 5y(5x – 4y)

= 20x² – 16xy – 25xy + 20y²

= 20x² – 41xy + 20y²

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Multiplying a Polynomial by a Polynomial

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Chapter 11: Algebraic Expressions - Exercise 11 (C) [Page 143]

Chapter 11 Algebraic Expressions
Exercise 11 (C) | Q 3.4 | Page 143

Multiply: 6x³ − 5x + 10 by 4 − 3x²

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