Question

show that$20x^{2} -24x-9=0$

Answer 1

Step-by-step explanation:

20x²-24x-9

splitting the middle term or factorize.

20x²+6x-30x-9

2x(10x+3)-3(10x+3)

(2x-3) (10x+3)

x=3/2 ,x=-3/10