2x^2-18=5x

Simple and best practice solution for 2x^2-18=5x 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 2x^2-18=5x equation:


Simplifying
2x2 + -18 = 5x

Reorder the terms:
-18 + 2x2 = 5x

Solving
-18 + 2x2 = 5x

Solving for variable 'x'.

Reorder the terms:
-18 + -5x + 2x2 = 5x + -5x

Combine like terms: 5x + -5x = 0
-18 + -5x + 2x2 = 0

Factor a trinomial.
(-2 + -1x)(9 + -2x) = 0

Subproblem 1

Set the factor '(-2 + -1x)' equal to zero and attempt to solve: Simplifying -2 + -1x = 0 Solving -2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -1x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1x = 0 + 2 -1x = 0 + 2 Combine like terms: 0 + 2 = 2 -1x = 2 Divide each side by '-1'. x = -2 Simplifying x = -2

Subproblem 2

Set the factor '(9 + -2x)' equal to zero and attempt to solve: Simplifying 9 + -2x = 0 Solving 9 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -2x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -2x = 0 + -9 -2x = 0 + -9 Combine like terms: 0 + -9 = -9 -2x = -9 Divide each side by '-2'. x = 4.5 Simplifying x = 4.5

Solution

x = {-2, 4.5}

See similar equations:

| 5x^2+11x-36= | | 1.5x=-6 | | 4/9p+2=0 | | 1080=(0.3x+6)x | | 4/9p+2 | | 4+2b=-14+5b | | x^2+(x-8)(x-8)=320 | | 5-6x=8-2x | | 3(3a-4)=5(2a-7) | | 3x^2-28x+65=0 | | 2p/3*5 | | 72=x+2*x*3 | | 72=x+2*x+3 | | (2p/3)*5 | | 5x=10(x-10) | | 5x^2-8=27 | | -(6x+2)=8-2(3x+1) | | (2p/3)x5 | | 295+39x=350 | | -7+x/5=-37 | | 5x+3=3c+9 | | 23-4e=7e+2 | | -13t+49-(-14t)-t= | | 4+6(10)= | | X^2=67 | | 7x-12x-5=-45 | | 6x-49=9x-97 | | 36x^2-84x=49 | | x^2+4x+159=0 | | -2x=-2x+4 | | X^2+22X+42=7X-2 | | 16y+14-14y-12= |

Equations solver categories