Home

NCERT Solutions

Class 8 Maths Solutions

Factorization

Ex.14.4

Exercise 14.4 Factorization- NCERT Solutions Class 8

Go back to 'Factorization'

Chapter 14 Ex.14.4 Question 1

Find and correct the errors in the statement:

\[4(x - 5) = 4x - 5\]

Solution

What is known?

Incorrect mathematical statement.

What is unknown?

Correct mathematical statement.

Reasoning:

Solve L.H.S.

Steps:

\[{\rm{S}} = 4(x - 5) \ne \rm R.H.S.\]

The correct statement is \(4(x - 5) = 4x - 20\)

Chapter 14 Ex.14.4 Question 2

Find and correct the errors in the statement:

\[x(3x + 2) = 3{x^2} + 2\]

Solution

What is known?

Incorrect mathematical statement.

What is unknown?

Correct mathematical statement.

Reasoning:

Solve L.H.S.

Steps:

\[\begin{align} {\rm{L.H.S}} &= x(3x + 2)\\&= 3{x^2} + 2x\\ {\rm{L.H.S}} &\ne {\rm{R.H.S}} \end{align}\]

The correct statement is \(x(3x + 2) = 3{x^2} + 2x\)

Download Cuemath NCERT App

Related Sections

Ex.14.1 Factorization

Ex.14.2 Factorization

Ex.14.3 Factorization

Ex.14.4 Factorization

Learn from the best math teachers and top your exams

Learn from the best

math teachers and top

your exams

Personalized Curriculum

Instant Doubts clarification

Cover latest CBSE Syllabus

Unlimited Mock & Practice tests

Covers CBSE, ICSE, IB curriculum

Instant doubt clearing with Cuemath Advanced Math Program

JEE Resources

CBSE Study Material

CBSE Class 10 Study Materials

CBSE Class 9 Study Materials

CBSE Class 8 Study Materials

CBSE Class 7 Study Materials

JEE Study Material

NCERT Resources

Other