How do you find x in y=-5x^2+30.5x without using the formula x=-b+ root b^2-4ac.... They say to factor it. But it's not working for me. The answer is suppose to be x= About 0.7 and 5.4. But I can't get that answer
-5x^2 - 30.5x
= -1/10 (50x^2 - 305x)
= -5/10 x (10x-61)
I suspect a typo, since the roots of the above are clearly 0 and 6.1