I don’t know factorization method, So please help me for solving this question because it is very important for upcoming exams also Find the roots of the following quadratic equations by factorisation:(i) x2 – 3x – 10 = 0
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Find the roots of the following quadratic equations by factorisation:(i) x2 – 3x – 10 = 0 Q.1(1)
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Given, x2 – 3x – 10 =0
Taking LHS,
=>x2 – 5x + 2x – 10
=>x(x – 5) + 2(x – 5)
=>(x – 5)(x + 2)
The roots of this equation, x2 – 3x – 10 = 0 are the values of x for which (x – 5)(x + 2) = 0
Therefore, x – 5 = 0 or x + 2 = 0
=> x = 5 or x = -2