-graphing (both in vertex form and in standard form)
-completing the square/square roots
-quadratic formula. Answer by edjones(7569) (Show Source):
You can put this solution on YOUR website! 5x^2+3x-2=0
What 2 factors of -10 add up 3? Ans: 5 and -2.
5x(x+1)-2(x+1)=0 Factoring by grouping.
Completing the square:
x^2+ 3x/5 - 2/5 = 0
x^2+.6x+.09=.4+.09 Complete the square by dividing the middle term by 2 and squaring the result.