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weeeeeb [17]
3 years ago
12

Solve the equation, , using the quadratic formula.

Mathematics
1 answer:
N76 [4]3 years ago
4 0

Answer:

 x=1\ or\ x=-\frac{1}{2}

Step-by-step explanation:

To solve the given quadratic equation 2x^2-x-1=0 you can apply the Quadratic formula, which is shown below:

x=\frac{-b\±\sqrt{b^2-4ac}}{2a}

Where:

a=2\\b=-1\\c=-1

Therefore, when you substitute values into the Quadratic formula shown above, you obtain the following solution:

x=\frac{-(-1)\±\sqrt{(-1)^2-4(2)(-1)}}{2*2}

x=1\ or\ x=-\frac{1}{2}

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