SOLUTION: √3X+15=x+3 √3X+15^2=(x+3)^2 3x+15=(x+3)^2 3x+15=x^2+6x+9 -15 -15 3x=x^2+6x-6 -3x -3x 0=x^2+3x-6 having trouble factoring x^2+3x-6 thanks so muc

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Question 598394: √3X+15=x+3
√3X+15^2=(x+3)^2
3x+15=(x+3)^2
3x+15=x^2+6x+9
-15 -15
3x=x^2+6x-6
-3x -3x
0=x^2+3x-6
having trouble factoring x^2+3x-6
thanks so much
Answer by edjones(8007)   (Show Source): You can put this solution on YOUR website!
It doesn't factor.
Using the quadratic formula there is only one answer
.
Ed
.
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=33 is greater than zero. That means that there are two solutions: .




Quadratic expression can be factored:

Again, the answer is: 1.37228132326901, -4.37228132326901. Here's your graph:
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