SOLUTION: solve using Q. F. Formula x=-b+- sq b-4ac/2a 2x^2+x-1=0 the answer is 1/2,1 I'm new to these so please help....thanks!

Question 84683: solve using Q. F. Formula x=-b+- sq b-4ac/2a

2x^2+x-1=0 the answer is 1/2,1

I'm new to these so please help....thanks!
Answer by uma(370) (Show Source): You can put this solution on YOUR website!
If the equation is of the form ax^2 + bx + c = 0, then by formula,

The given equation is 2x^2 + x - 1 = 0,
where a = 2, b = 1 and c = -1.
So plugging in the above formula,

==>
==>
==>
==> x = (-1+3)/4 and x = (-1-3)/4
==> x = 2/4 and x = -4/4
==> x = 1/2 and x = -1

Good Luck!!!
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