Mathematics for IGCSE & O level - Equations (Section 7 - No. 22)
What should you do first to solve a quadratic equation by factorization?
Set the equation equal to 0.
Factorize the quadratic expression.
Solve the equation
Find two numbers whose product is 'c' and whose sum is 'b' (in ax²+bx+c=0)
Paliwanag
This allows to solve each factor separately.