SOLUTION: how do i get a decimal answer from : 4x^2-2x-14=0

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Question 882105: how do i get a decimal answer from : 4x^2-2x-14=0
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Simplify the equation first. Whatever solution you find after solving, you can turn into decimal either through division of the RATIONAL values or through add or subtract any irrational value included in the solutions.

4x%5E2-2x-14=0
2x%5E2-x-7=0
General Solution:
D=%28-1%29%5E2%2B4%2A2%2A7=57
D=3%2A19, two prime factors.
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x=%281%2B-+sqrt%28D%29%29%2F4
highlight%28x=%281%2B-+sqrt%2857%29%29%2F4%29.
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Use a handheld calculator if you want. sqrt%2857%29=7.54983...., do what you need with it.

You have something like x=%281%2B-+7.549834435dotdotdot%29%2F4