x(2x+9)=18

Simple and best practice solution for x(2x+9)=18 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 x(2x+9)=18 equation:


Simplifying
x(2x + 9) = 18

Reorder the terms:
x(9 + 2x) = 18
(9 * x + 2x * x) = 18
(9x + 2x2) = 18

Solving
9x + 2x2 = 18

Solving for variable 'x'.

Reorder the terms:
-18 + 9x + 2x2 = 18 + -18

Combine like terms: 18 + -18 = 0
-18 + 9x + 2x2 = 0

Factor a trinomial.
(-6 + -1x)(3 + -2x) = 0

Subproblem 1

Set the factor '(-6 + -1x)' equal to zero and attempt to solve: Simplifying -6 + -1x = 0 Solving -6 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + -1x = 0 + 6 Combine like terms: -6 + 6 = 0 0 + -1x = 0 + 6 -1x = 0 + 6 Combine like terms: 0 + 6 = 6 -1x = 6 Divide each side by '-1'. x = -6 Simplifying x = -6

Subproblem 2

Set the factor '(3 + -2x)' equal to zero and attempt to solve: Simplifying 3 + -2x = 0 Solving 3 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -2x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -2x = 0 + -3 -2x = 0 + -3 Combine like terms: 0 + -3 = -3 -2x = -3 Divide each side by '-2'. x = 1.5 Simplifying x = 1.5

Solution

x = {-6, 1.5}

See similar equations:

| 2w+18=58 | | 6586.5896=4*3.14*r^2 | | 9m(4m-8)=53 | | 25x^2+30=0 | | .25x-1.75=1+3x | | 9v-1+3(2v+1)=-3(v+4) | | 2x-12y=22 | | 4x-69=x+21 | | (10x-8)=5x+8 | | 5m(6m-9)=11 | | -21=-7k+7 | | (8x-5)(2x^2-9x-5)=0 | | X-2(4x+4)=8-7x | | -(6x-3y+2)= | | -5(-10)-2y=24 | | 5x^2-3x=2x^2+x | | 500=65e^15x | | -3-2.5(2)=c | | 175m-75m+53350=55825-175m | | 7x^2-6x^2+17x-6x+24=0 | | 3-6(2-3x)=9(2x-5) | | X(8-3)+3=28 | | f(x)=4-8(3) | | 8y+(-35)=-75 | | 8=2(h-7) | | 3h=28-4h | | -8x=-25 | | 4+6=310 | | -3r-16r=-19 | | y/4-y/2=-8 | | 3.14r^2*h=1 | | -0.02p-0.02(3-4p)=0.02(p-3)-0.08 |

Equations solver categories