SOLUTION: please help me solve this problem using the quadratic root formula: {{{x^2-x+20=0}}}

Question 151058: please help me solve this problem using the quadratic root formula:
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!

Start with the given equation.

Notice we have a quadratic equation in the form of where , , and

Let's use the quadratic formula to solve for x

Start with the quadratic formula

Plug in , , and

Negate to get .

Square to get .

Multiply to get

Subtract from to get

Multiply and to get .

Simplify the square root

or Break up the expression.

So our answers are or

which approximate to or

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