SOLUTION: x^2+9x-12=0
x^2=9x=12
4x^2+36x=12x4
4x^2+36x=48
4x^2+36x+6=48+6
and this is where i get completely confused...i don't even know if I've done the problem right thus far. yo
Algebra ->
Quadratic Equations and Parabolas
-> SOLUTION: x^2+9x-12=0
x^2=9x=12
4x^2+36x=12x4
4x^2+36x=48
4x^2+36x+6=48+6
and this is where i get completely confused...i don't even know if I've done the problem right thus far. yo
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and this is where i get completely confused...i don't even know if I've done the problem right thus far. your suggestions please??? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! x^2+9x-12=0
Use the quadratic formula:
x = [-b +- sqrt(b^2-4ac)]/(2a)
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x = [-9 +- sqrt(81 - 4*1*-12)]/2
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x = [-9 +- sqrt(129)]/2
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x = [-9 +- 11.36]/2
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x = [2.36/2] or x = [-20.36/2]
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x = 1.18 or x = -10.18
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cheers,
Stan H.
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