# NCERT Solutions For Class 8 Maths Chapter 14 Factorisation Ex 14.4

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Textbook | NCERT |

Board | CBSE |

Category | NCERT Solutions |

Class | Class 8 |

Subject | Maths |

Chapter | Chapter 14 |

Exercise | Class 8 Chapter 14 Factorisation Exercise 14.4 |

Number of Questions Solved | 6 |

## NCERT Solutions for Class 8 Maths Chapter 14 Factorisation Ex 14.4

**NCERT TEXTBOOK EXERCISES**

**Question 1. 4(x – 5) = 4x – 5**

**Solution. 4(x – 5) = 4x – 20**

**Question 2. x(3x + 2) = 3x ^{2}+2**

**Solution. x(3x + 2) = 3x ^{2}+2x**

**Question 3. 2x + 3y = 5xy**

**Solution.**

2x + 3y = 2x + 3y

**Question 4. x + 2x + 3x = 5x**

**Solution.**

x + 2x + 3x = 6x

**Question 5. 5y + 2y + y – 7y = 0**

**Solution.**

5y + 2y + y – 7y – y

**Question 6. 3x + 2x = 5x ^{2}**

**Solution.**.

3x + 2x = 5x

**Question 7. ${ \left( 2x \right) }^{ 2 } + 4(2x) + 7 = { 4x }^{ 2 } + 8x + 7$**

**Solution.**

${ \left( 2x \right) }^{ 2 } + 4(2x) + 7 = { 4x }^{ 2 } + 8x + 7$

**Question 8. ${ \left( 2x \right) }^{ 2 } + 5x = 4x + 5x = 9x$**

**Solution.**

${ \left( 2x \right) }^{ 2 } + 5x = { 4x }^{ 2 } + 5x$

**Question 9. (${ \left( 3x+2 \right) }^{ 2 } = { 6x }^{ 2 }+ 12x + 4.$.**

**Solution.**

${ \left( 3x+2 \right) }^{ 2 } = { 9x }^{ 2 }+ 12x + 4.$

**Question 10.**

**Solution.**

**Question 11. (y−3) ^{2}=y^{2}–9**

**Solution.**

${ \left( y-3 \right) }^{ 2 } = { y }^{ 2 } – 2(y)(3) + { 3 }^{ 2 }$

= y^{2}–6y+9

and not equal to y^{2}–9

**Question 12. ${ \left( z+5 \right) }^{ 2 } = { z }^{ 2 } + 25$**

**Solution.**

${ \left( z+5 \right) }^{ 2 } = { z }^{ 2 } + 2(z) (5) + { 5}^{ 2 }$

= z^{2}+10z+25

and not equal to z^{2}+25

**Question 13. $\left( 2a+36 \right) \left( a-b \right) = { 2a }^{ 2 }-{ 3b }^{ 2 }$**

**Solution.**

**Question 14. $\left( a+4 \right) \left( a+2 \right) = { a}^{ 2 } + 8$**

**Solution.**

**Question 15. $\left( a-4 \right) \left( a-2 \right) = { a}^{ 2 }-8$**

**Solution.**

**Question 16. 3x ^{2}/3x^{2}=0**

**Solution.**

3x^{2}/3x^{2}=1 and not equal to 0

**Question 17. $\frac { { 3x }^{ 2 }+1 }{ { 3x }^{ 2 } } =1+1=2$**

**Solution.**

$\frac { { 3x }^{ 2 }+1 }{ { 3x }^{ 2 } } =\frac { { 3x }^{ 2 } }{ { 3x }^{ 2 } } +\frac { 1 }{ { 3x }^{ 2 } }$

=1+1/3x^{2} and not equal to 1 + 1 = 2

**Question 18. $\frac { 3x }{ 3x+2 } =\frac { 1 }{ 2 }$**

**Solution.**

$\frac { 3x }{ 3x+2 } =\frac { 3x }{ 3x+2 }$ and not equal to 1/2

**Question 19. $\frac { 3 }{ 4x+3 } =\frac { 1 }{ 4x }$**

**Solution.**

$\frac { 3 }{ 4x+3 } =\frac { 3 }{ 4x+3 }$ and not equal to 1/4x

**Question 20. $\frac { 4x+5 }{ 4x } =5$**

**Solution.**

$\frac { 4x+5 }{ 4x } =\frac { 4x }{ 4x } +\frac { 5 }{ 4x } =1+\frac { 5 }{ 4x }$ and not equal to 5

**Question 21. $\frac { 7x+5 }{ 5 } =7x$**

**Solution.**

$\frac { 7x+5 }{ 5 } =\frac { 7x }{ 5 } +\frac { 5 }{ 5 } =\frac { 7x }{ 5 } +1$ and not equal to 7x

## NCERT Solutions for Class 8 Maths Chapter 14 Factorisation Exercise 14.4 PDF

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