Question 131486
3x^2-2x-5=0
factor out
3x-5=-15
look for two numbers that when u multiply u will get -15 and when u add both u will get -2
that number is 3 and -5
so, (x+3) and (x-5)
so, wat about the the coefficient of x^2=3
so we multiply both factors with 1/3
x=-3(i/3) and x=5(1/3)
therefore x=1- and x=5/3

u can as well use the quadratic formula and u will get same answer. hope this helps