NCERT Solutions for Class 10 Maths Chapter 4
Important NCERT Questions
Quadratic Equation
NCERT Books for Session 2022-2023
CBSE Board and UP Board Others state Board
EXERCISE 4.2
Page No:76
Questions No:1 Part-1
Find the roots of the following quadratic equations by factorization: x² – 3x – 10 = 0
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x² – 3x – 10 = 0
solving the quadratic equations, we got
x² – 3x – 10 = 0
⇒ x² – 5x + 2x + 10 = 0
⇒ x(x -5) + 2x (x – 5) = 0
⇒ (x – 5) (x + 2) = 0
⇒ (x – 5) = 0 or (x + 2) = 0
Either x = 5 or x = -2
Hence, the roots the given quadratic equations are 5 and -2