How do you solve x2x=5x9?

1 Answer
Jul 10, 2015

x=3

Explanation:

x2x=5x9

Subtract 5x from both sides of the equation.

x2x5x=9 =

x26x=9

Add 9 to both sides.

x26x+9=0

We now have a quadratic equation with the form ax2+bx+c=0, where a=1; b=6; and c=9.

We can solve for x using the quadratic formula.

Quadratic Formula

x=b±b24ac2a =

x=(6)±6241921 =

x=6±36362 =

x=6±02 =

x=6±02 =

x=62 =

x=3