Simplify : (7x – 8) (3x + 2)

Simplify : (7x – 8) (3x + 2)

Sum

(7x – 8) (3x + 2) = 7x(3x + 2) −8(3x+ 2)

= 21x² + 14x – 24x – 16

= 21x² – 10x – 16

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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 3.1 | Page 143

Multiply: 2y − 4y³ + 6y⁵ by y² + y − 3

Multiply:

5p²+ 25pq + 4q² by 2p² − 2pq +3q²

Simplify : (px – q) (px + q)

Simplify : (3y + 4z) (3y – 4z) + (2y + 7z) (y + z)

The adjacent sides of a rectangle are x² – 4xy + 7y² and x³ – 5xy². Find its area.

Multiply -4xy³ and 6x²y and verify your result for x = 2 and y= 1.

Evaluate: (3x – 2)(x + 5) for x = 2.

Evaluate: (2x – 5y)(2x + 3y) for x = 2 and y = 3.

Multiply and then verify :
−3x²y² and (x – 2y) for x = 1 and y = 2.

Simplify : (5 – x) (6 – 5x) (2 -x).