2x25x30 Solve by factoringSolutionHere first term last term
2x^2-5x-3=0
Solve by factoring
Solution
Here first term * last term = 2* -3 =-6
and the middle term = -5.
So we have to find two numbers whose product is -6 and whose sum is -5.
Two such numbers are -6 and 1 (because -6 * 1 = -6 and -6+1=-5).
So,
2x2 - 5x - 3=0
2x2 - 6x + x - 3 = 0
2x ( x - 3) + 1 (x - 3) = 0
(x - 3) (2x + 1) =0
x - 3 =0; 2x + 1 =0
x =3; x= -1/2
