Q

# Find the roots of the following quadratic equations by factorisation: (i) x ^2 - 3x - 10 = 0

Q1.    Find the roots of the following quadratic equations by factorisation:

(i)    $x^2 - 3x - 10 =0$

Views

Given the quadratic equation: $x^2 - 3x - 10 =0$

Factorisation gives, $x^2 - 5x+2x - 10 =0$

$\Rightarrow x^2 - 5x+2x - 10 =0$

$\Rightarrow x(x-5) +2(x-5) =0$

$\Rightarrow (x-5)(x+2) =0$

$\Rightarrow x= 5\ or\ -2$

Hence, the roots of the given quadratic equation are $5\ and\ -2$.

Exams
Articles
Questions