SOLUTION: These formula's just get me going and I get lost. The questions states: Page 794: Problem 18:Solve the equation using the quadratic formula. Simplify solution if possible. X^

Question 84807This question is from textbook
: These formula's just get me going and I get lost. The questions states:
Page 794: Problem 18:Solve the equation using the quadratic formula. Simplify solution if possible.
X^2 =2x+4
This question is from textbook

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

Get all terms to one side

Solved by pluggable solver: SOLVE quadratic equation with variable

Quadratic equation (in our case ) has the following solutons:

For these solutions to exist, the discriminant should not be a negative number.

First, we need to compute the discriminant : .

Discriminant d=20 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 3.23606797749979, -1.23606797749979. Here's your graph:

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