SOLUTION: Can someone help me use quadratic formula to solve: Solve and graph x2 + x � 4 = 0. (x^2+x-4 =0) If possible can you also graph the answer using word program? and send me an at

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Question 475576: Can someone help me use quadratic formula to solve: Solve and graph x2 + x � 4 = 0. (x^2+x-4 =0)
If possible can you also graph the answer using word program? and send me an attachment?
Answer by jim_thompson5910(35256) (Show Source):
You can put this solution on YOUR website!
For more help, check out this quadratic formula solver.

Solved by pluggable solver: Quadratic Formula

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

Starting with the general quadratic

the general solution using the quadratic equation is:

So lets solve ( notice , , and )

Plug in a=1, b=1, and c=-4

Square 1 to get 1

Multiply to get

Combine like terms in the radicand (everything under the square root)

Simplify the square root (note: If you need help with simplifying the square root, check out this solver)

Multiply 2 and 1 to get 2

So now the expression breaks down into two parts

or

Now break up the fraction

or

Simplify

or

So the solutions are:

or

For more help, check out this quadratic formula solver.

Here's the graph