9x^2-18x=7

Simple and best practice solution for 9x^2-18x=7 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 9x^2-18x=7 equation:


Simplifying
9x2 + -18x = 7

Reorder the terms:
-18x + 9x2 = 7

Solving
-18x + 9x2 = 7

Solving for variable 'x'.

Reorder the terms:
-7 + -18x + 9x2 = 7 + -7

Combine like terms: 7 + -7 = 0
-7 + -18x + 9x2 = 0

Factor a trinomial.
(-1 + -3x)(7 + -3x) = 0

Subproblem 1

Set the factor '(-1 + -3x)' equal to zero and attempt to solve: Simplifying -1 + -3x = 0 Solving -1 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + -3x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -3x = 0 + 1 -3x = 0 + 1 Combine like terms: 0 + 1 = 1 -3x = 1 Divide each side by '-3'. x = -0.3333333333 Simplifying x = -0.3333333333

Subproblem 2

Set the factor '(7 + -3x)' equal to zero and attempt to solve: Simplifying 7 + -3x = 0 Solving 7 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -3x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -3x = 0 + -7 -3x = 0 + -7 Combine like terms: 0 + -7 = -7 -3x = -7 Divide each side by '-3'. x = 2.333333333 Simplifying x = 2.333333333

Solution

x = {-0.3333333333, 2.333333333}

See similar equations:

| x-4-3=13-2-1 | | 22.5x-1.5= | | 7q+q=40 | | -t^2=4-4t | | 45a^4-210a^2+245= | | -16t^2+28t-6=0 | | -4s+2(4s+1)=125 | | (30-x)=2(x+12) | | 5x+x=40 | | -t^2-9-6t=0 | | 72p^2-8x^2=0 | | x^3-17x^2+72x-60=0 | | 1x-4x+9-3= | | 2(3x+5)+6=9x+4 | | 5r^3+20r^2=105r | | 6x^2+7xy^2+y^3= | | 15-5m+6=3+4m-12 | | 6d-7=12 | | .25x+6=0 | | 48-20%= | | (X+5)+(x+5)+(2x-7)=63 | | 2(v+4)+6=24 | | r*r+2r=24 | | .25*12+6=y | | .25*12+6=0 | | 8-5(1+x)=8-4x | | 28x+20y= | | 19=-5(4x+3)+21x | | .5(c+5)-10=(-4) | | 4x+5+x-10=8 | | y^4-15y^2-15=0 | | .25*0+6=y |

Equations solver categories