SOLUTION: solve x^2+6x+8=0 by graphing

Question 699687: solve x^2+6x+8=0 by graphing
Answer by mouk(232) (Show Source): You can put this solution on YOUR website!

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=4 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: -2, -4. Here's your graph:

RELATED QUESTIONS
How can I solve x^2 +6x+8 by graphing ? (answered by MathLover1)

Solve the quadratic inequality by graphing an appropriate quadratic function.... (answered by Edwin McCravy)

Solve by graphing. x^2+4x+3=0, x^2-6x+9=0, and... (answered by Fombitz)

could someone please help me? solve by graphing: x^2-4x+3=0 and... (answered by Nate)

please assist me in: 1. solve by completeing the square. p² - 8p = 0. (answered by Edwin McCravy,Earlsdon)

Solve each equation by graphing. 3x^3-6x^2-9x =... (answered by ewatrrr)

Solve by graphing. What are the integral roots of x^2-7x-8=0? (answered by Fombitz)

solve by graphing 4x^2-x+8=y or 4x^2-x+8=0 vertex= ( 1/8 , 127/16 ) (answered by Alan3354)

Solve the system of equations by graphing y=-x+2... (answered by ewatrrr)