Question 147887: Give the exact and approximate solutions of three decimal places.
x^2+7x-3
exact=
approximate (3 decimal places.) Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Give the exact and approximate solutions of three decimal places.
x^2+7x-3
exact=
x = [-7 +- sqrt(49 - 4*1*-3)]/2
x = [-7 +- sqrt(61)]/2
x = (-7 + sqrt(61)]/2 or x = (-7-sqrt(61)]/2
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approximate
x = (-7 + 7.8102)/2 = 0.405.. or x = (-7-7.8102)/2 = -7.405..
Cheers,
Stan H.
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