SOLUTION: Please help! Solve by using quadratic formula {{{ ax^2+bx+c=0 }}}. {{{ 4x^2+x-1=0 }}}

Question 625897: Please help! Solve by using quadratic formula .

Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!

Start with the given equation.

Notice that the quadratic is in the form of where , , and

Let's use the quadratic formula to solve for "x":

Start with the quadratic formula

Plug in , , and

Square to get .

Multiply to get

Rewrite as

Add to to get

Multiply and to get .

or Break up the expression.

So the solutions are or
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