Find the roots of the equation 2x2−7x−39=0 by the method of factorization.
x=132,x=−3
2x2−7x−39=0 [ Expressing as ax2+bx+c=0 ]
Now, by using the method of factorization
→ 2x2−13x+6x−39=0
x(2x−13)+3(2x−13)=0
(2x−13)(x+3)=0
2x−13=0,or x+3=0
→ x=132,or x=−3