SOLUTION: Use three or more sentences to describe how you would solve the following equation using the quadratic formula. 2x2-13x-7=0

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Question 125586: Use three or more sentences to describe how you would solve the following equation using the quadratic formula. 2x2-13x-7=0



Answer by SoOoDumb(14) About Me  (Show Source):
You can put this solution on YOUR website!
First of all, you need to find what your A,B,and C values are.
ax%5E2%2Bbx%2Bc=0
2x%5E2-13x-7=0
a=2, b=-13, c=-7
Quadratic formula:
x=%28-b%2B-sqrt%28b%5E2-4%2Aa%2Ac%29%29%2F%282%2Aa%29
Plug in your a,b,c values and solve.
x=%28-%28-13%29%2B-sqrt%28%28-13%29%5E2-4%2A%282%29%2A%28-7%29%29%29%2F%282%2A%282%29%29
x=%2813%2B-sqrt%28%28-13%29%5E2-4%2A%282%29%2A%28-7%29%29%29%2F%282%2A%282%29%29
x=%2813%2B-sqrt%28169-4%2A%282%29%2A%28-7%29%29%29%2F%282%2A%282%29%29
x=%2813%2B-sqrt%28169-8%2A%28-7%29%29%29%2F%282%2A%282%29%29
x=%2813%2B-sqrt%28169%2B56%29%29%2F%282%2A%282%29%29
x=%2813%2B-sqrt%28225%29%29%2F%282%2A%282%29%29
x=%2813%2B-sqrt%28225%29%29%2F%284%29%29
x=%2813%2B-+15%29%2F%284%29%29
x=%2813%2B+15%29%2F%284%29%29 ............ x=%2813-+15%29%2F%284%29%29
x=%2828%29%2F%284%29%29 ............ x=%28-2%29%2F%284%29%29
x=7 ............ x=-1%2F2