x^2+x(x+3)=-2x+18

Simple and best practice solution for x^2+x(x+3)=-2x+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^2+x(x+3)=-2x+18 equation: 


Simplifying
x2 + x(x + 3) = -2x + 18

Reorder the terms:
x2 + x(3 + x) = -2x + 18
x2 + (3 * x + x * x) = -2x + 18
x2 + (3x + x2) = -2x + 18

Reorder the terms:
3x + x2 + x2 = -2x + 18

Combine like terms: x2 + x2 = 2x2
3x + 2x2 = -2x + 18

Reorder the terms:
3x + 2x2 = 18 + -2x

Solving
3x + 2x2 = 18 + -2x

Solving for variable 'x'.

Reorder the terms:
-18 + 3x + 2x + 2x2 = 18 + -2x + -18 + 2x

Combine like terms: 3x + 2x = 5x
-18 + 5x + 2x2 = 18 + -2x + -18 + 2x

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

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

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

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


Subproblem 1
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

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 = {-4.5, 2}

See similar equations:

| x^2+x(x+3)=-1x+18 | | -4.905x^2+180x-20=0 | | X^2-2v=3 | | (2w-3)(1+w)=0 | | 4k= | | Ln(3x-1)+ln(x-5)=ln*5 | | k+12= | | 2x^2-2sqrt(2x)-1=0 | | C^2+2x-63=0 | | 3x+4-5x+2=8 | | 10x+3y+2x-3y= | | 9-3(n-50)=30 | | 802log*20=x | | 802log(20)=x | | .00983log(20)=x | | 8x+20=6x+40 | | 1+(1+r)(1+r)=2 | | 20=18-X | | (1+r)(1+r)=2 | | f(2)=6-3x | | f(0)=6-3x | | f(-6)=6-3x | | LN(801.4)=x | | 20log(801.84)=x | | 4x+12=18-12x | | 7n^2-84n+252=0 | | 45-10u=32 | | 0.8y=-x+16 | | x+4=y-1 | | 2x-3y=o | | x^3+ln(x+1)=40 | | 3(x-1)=4(x+2)+2 |

Equations solver categories