Question

find the roots of following quadratic by factorisation method. 2 x² - 3 x -5 =0​

Answer 1

Answer:

2 x² - 3 x -5 = 0​

2 x² - 5x +2x-5 = 0​

2x(2x-5)+1(2x-5) = 0

(2x-5) and (2x+1)

2X-5 = 0  

2x = 5

x = 5/2

x = 2.5

2x+1 = 0

2x = -1

x = -1/2

x = -0.5

Therefore roots of the equation are 2.5 and 0.5