2x^2+8x-x-4=18

Simple and best practice solution for 2x^2+8x-x-4=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 2x^2+8x-x-4=18 equation:


Simplifying
2x2 + 8x + -1x + -4 = 18

Reorder the terms:
-4 + 8x + -1x + 2x2 = 18

Combine like terms: 8x + -1x = 7x
-4 + 7x + 2x2 = 18

Solving
-4 + 7x + 2x2 = 18

Solving for variable 'x'.

Reorder the terms:
-4 + -18 + 7x + 2x2 = 18 + -18

Combine like terms: -4 + -18 = -22
-22 + 7x + 2x2 = 18 + -18

Combine like terms: 18 + -18 = 0
-22 + 7x + 2x2 = 0

Factor a trinomial.
(-11 + -2x)(2 + -1x) = 0

Subproblem 1

Set the factor '(-11 + -2x)' equal to zero and attempt to solve: Simplifying -11 + -2x = 0 Solving -11 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '11' to each side of the equation. -11 + 11 + -2x = 0 + 11 Combine like terms: -11 + 11 = 0 0 + -2x = 0 + 11 -2x = 0 + 11 Combine like terms: 0 + 11 = 11 -2x = 11 Divide each side by '-2'. x = -5.5 Simplifying x = -5.5

Subproblem 2

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

Solution

x = {-5.5, 2}

See similar equations:

| 4x+20=2x+25+x+20 | | 3x+4y=6.8 | | X-512=487 | | 40-6x=-90x+40 | | -53=n+7 | | X^2+2xy=-8 | | 9(4-6)+55= | | -15.00-2.00x=25.00 | | f(x)=5x^2+10x+3 | | -15.00-12.00x=25.00 | | 5.75=3/4x | | -7(r-9)= | | 5(2x+3)=4x-9 | | 6r+5(4r-12)= | | 7+7x=2x+32 | | 85=m-4 | | 43+10n=24n-27 | | (x-4y)dx+(x+2y)dy=0 | | 4.8/2 | | 2.5/465 | | 7(5n+9)+n= | | h(t)=27 | | Log(8)+log(-5x)=1 | | -5m+45=27-7m | | 7x-10=6(11-3x) | | 4x-11=9x-26 | | 18-3=15 | | 5=x-10y | | 4/3.14=70 | | 4x+3(7x-11)=192 | | 12x+18(1911-x)=31752 | | sin(x)-2=0 |

Equations solver categories