Question 734575: need help with quadratic equation
such as
x^2 + 12x -64 = 0
x2 - 2x - 13 = 0
Found 2 solutions by stanbon, lynnlo:
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! need help with quadratic equation
such as
x^2 + 12x -64 = 0
x2 - 2x - 13 = 0
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Use the quadratic formla:
x = [-b +- sqrt(b^2-4ac)]/(2a)
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Cheers,
Stan H.
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Answer by lynnlo(4176) (Show Source):
You can put this solution on YOUR website! PROBLEM:(1)
X^2+12X-64=0
(1)FIND COEFFICIENTS A,B,C
A=1,B=12,C=-64
(2)PLUG IN VALUES
X1,2====-B±√B^2-4AC/2A
X1,2====-12±√12^2-4.1.(-64/2.1
(3)SIMPLIFY
X1,2====-12±√400/2
(4)SOLVE FOR X
X1,,=-12±√400/2=4
X2,,=-12√400/2=-16
X=4,-16
PROBLEM(2)
X2-2X-13=0
X=1+√14,,X≈4.7417
X=1-√14,,X≈-2.7417
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