Question 1038879: Solve by two methods, quadratic equation and factoring:
2x^2-x-15=0 Found 2 solutions by ikleyn, MathTherapy:Answer by ikleyn(52776) (Show Source):
You can put this solution on YOUR website! .
Solve by two methods, quadratic equation and factoring:
2x^2-x-15=0
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Solve by 2 methods,Quad Equation and Factoring : 2x^2-x-15=0
You ask me to show, this may or may not be right
X=-b±√b^2-4ac/2a. a=2, b= -1, c= -15 X=-(-1)±√1^2+4^2(-15)/2^2 X1,2=(1±11)/2^2 X1=12/4= 3 X2=-10/4= -5/2
Having problems with getting my zero Factoring right and checking problem
My responce: Bravo that you found a courage to start it.
Your calculations are incorrect, and I see that you really need help. Let me fix it:
I would use the factoring method 1st, since it's easier, and you can use the solution(s) to check the solution(s) after using
the quadratic equation formula ------- Replacing - x with - 6x + 5x
2x + 5 = 0 OR x - 3 = 0
