RS Aggarwal Solutions Class 8 Mathematics Solutions for Operations on Algebraic Expressions Exercise 6E in Chapter 6 - Operations on Algebraic Expressions

Question 4 Operations on Algebraic Expressions Exercise 6E

(2x+3) (3x-1) =?

$(a)\left(6x^2+8x-3\right)$

$(b)\left(6x^2+7x-3\right)$

$(c)\left(6x^2-7x-3\right)$

$(d)\left(6x^2-7x+3\right)$

Answer:

$\text{ (b) }\left(6x^2+7x-3\right)$

Explanation:

Given (2x+3) (3x-1)

By solving in horizontal method we get

(2x+3) (3x-1)= 2x (3x-1) + 3 (3x-1)

$(2x+3)(3x-1)=\left(6x^2+7x-3\right)$

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Exercises

Operations on Algebraic Expressions Exercise 6A

Operations on Algebraic Expressions Exercise 6B

Operations on Algebraic Expressions Exercise 6C

Operations on Algebraic Expressions Exercise 6D

Operations on Algebraic Expressions Exercise 6E

Chapters

Rational Numbers

Exponents

Squares and Square Roots

Cubes and Cube Roots

Playing with Numbers

Operations on Algebraic Expressions

Factorisation

Linear Equations

Percentage

Profit and Loss

Compound Interest

Direct and Inverse Proportions

Time and Work

Polygons

Parallelograms

Construction of Quadrilaterals

Area of a Trapezium and a Polygon

Three-Dimensional Figures

Volume and Surface Area of Solids

Data Handling

Introduction to Coordinate Geometry

Line Graphs and Linear Graphs

Pie Charts

Probability