NCERT Solutions for Class 8 Maths Chapter 14 Factorisation Ex 14.4 are part of NCERT Solutions for Class 8 Maths. Here we have given NCERT Solutions for Class 8 Maths Chapter 14 Factorisation Ex 14.4.

Board |
CBSE |

Textbook |
NCERT |

Class |
Class 8 |

Subject |
Maths |

Chapter |
Chapter 14 |

Chapter Name |
Factorisation |

Exercise |
Ex 14.4 |

Number of Questions Solved |
1 |

Category |
NCERT Solutions |

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

**Question 1.**

Find and correct the errors in the following mathematical statements.

**1.** 4 (x – 5) = 4x – 5

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

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

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

**5.** 5y + 2y + y – 7y = 0

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

**7.** (2x)^{2} + 4(2x) + 7 = 2x^{2} + 8x + 7

**8.** (2x)^{2} + 5x = 4x + 5x = 9x

**9.** (3x + 2)^{2} = 3x^{2} + 6x + 4

**10.** Substituting x = -3 in

**(a)** x^{2} + 5x + 4 gives (-3)^{2} + 5(-3) + 4 = 9 + 2 + 4 = 15

**(b)** x^{2} – 5x + 4 gives (-3)^{2} -5(-3) + 4 = 9 – 15 + 4 = -2

**(c)** x^{2} + 5x gives (-3)^{2} + 5(-3) = -9 – 15 = -24

**11.** (y – 3)^{2} = y^{2} – 9

**12.** (z + 5)^{2} = z^{2} + 25

**13.** (2a + 3b)(a – b) = 2a^{2} – 3b^{2}

**14.** (a + 4)(a + 2) = a^{2} + 8

**15.** (a – 4)(a – 2) = a^{2} – 8

**16.**

**17.**

**18.**

**19.**

**20.**

**21.**

**Solution:**

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