x^2-1x-9x+18=0

Simple and best practice solution for x^2-1x-9x+18=0 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^2-1x-9x+18=0 equation:


Simplifying
x2 + -1x + -9x + 18 = 0

Reorder the terms:
18 + -1x + -9x + x2 = 0

Combine like terms: -1x + -9x = -10x
18 + -10x + x2 = 0

Solving
18 + -10x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-18' to each side of the equation.
18 + -10x + -18 + x2 = 0 + -18

Reorder the terms:
18 + -18 + -10x + x2 = 0 + -18

Combine like terms: 18 + -18 = 0
0 + -10x + x2 = 0 + -18
-10x + x2 = 0 + -18

Combine like terms: 0 + -18 = -18
-10x + x2 = -18

The x term is -10x.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10x + 25 + x2 = -18 + 25

Reorder the terms:
25 + -10x + x2 = -18 + 25

Combine like terms: -18 + 25 = 7
25 + -10x + x2 = 7

Factor a perfect square on the left side:
(x + -5)(x + -5) = 7

Calculate the square root of the right side: 2.645751311

Break this problem into two subproblems by setting 
(x + -5) equal to 2.645751311 and -2.645751311.

Subproblem 1

x + -5 = 2.645751311 Simplifying x + -5 = 2.645751311 Reorder the terms: -5 + x = 2.645751311 Solving -5 + x = 2.645751311 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = 2.645751311 + 5 Combine like terms: -5 + 5 = 0 0 + x = 2.645751311 + 5 x = 2.645751311 + 5 Combine like terms: 2.645751311 + 5 = 7.645751311 x = 7.645751311 Simplifying x = 7.645751311

Subproblem 2

x + -5 = -2.645751311 Simplifying x + -5 = -2.645751311 Reorder the terms: -5 + x = -2.645751311 Solving -5 + x = -2.645751311 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = -2.645751311 + 5 Combine like terms: -5 + 5 = 0 0 + x = -2.645751311 + 5 x = -2.645751311 + 5 Combine like terms: -2.645751311 + 5 = 2.354248689 x = 2.354248689 Simplifying x = 2.354248689

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.645751311, 2.354248689}

See similar equations:

| s=-16t^2+256t | | x^2+5x-6x-30=0 | | 5(y-4)=2(+5) | | 63x^2+67x-18= | | (2x+3y)dx-4(x+1)dy=0 | | 8a^2-50b^2=0 | | 4x+6y=0.8 | | 3x-5.4=2x+1 | | (x-5)/(x-8)=0 | | x(.84)=34944 | | 4x+7=5(2x-4)+8 | | 5(x-7)=6x+2 | | x(.84)=100 | | 2x-4m^2=x^2-4mx+9 | | (5c+2)(2c-1)= | | 11m=6 | | f(x+5)=2x-5 | | G(30)=2/3t | | G(30)=2/3*30 | | x+x-22+x-17=180 | | h(t)=-4.9t^2+22t+14 | | 200/147.1 | | X-22+x-17+x=180 | | 10x-5y=15fory | | (5x+4z)x(2x-7z)= | | 5.5*10^8=x/(.14-x)(1.2-6x) | | (5x+4z)(2x-7z)= | | 3*5-25+8*4*2-40= | | 2/3*70/3 | | 2/3*31/3 | | 2x+(x+24)+x=288 | | 5/4*36 |

Equations solver categories