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:

5p²+ 25pq + 4q² by 2p² − 2pq +3q²

Simplify : (px – q) (px + q)

Simplify : (4x – 5y) (5x – 4y)

The base and the altitude of a triangle are (3x – 4y) and (6x + 5y) respectively. Find its area.

Evaluate (3x⁴y²) (2x²y³) for x = 1 and y = 2.

If x = 2 and y = 1; find the value of (−4x²y³) × (−5x²y⁵).

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

Evaluate: x(x – 5) + 2 for x = 1.

Multiply: 2x² – 4x + 5 by x² + 3x – 7

Simplify : (5 – x) (6 – 5x) (2 -x).