x^2-3x=171

Simple and best practice solution for x^2-3x=171 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^2-3x=171 equation:


Simplifying
x2 + -3x = 171

Reorder the terms:
-3x + x2 = 171

Solving
-3x + x2 = 171

Solving for variable 'x'.

Reorder the terms:
-171 + -3x + x2 = 171 + -171

Combine like terms: 171 + -171 = 0
-171 + -3x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '171' to each side of the equation.
-171 + -3x + 171 + x2 = 0 + 171

Reorder the terms:
-171 + 171 + -3x + x2 = 0 + 171

Combine like terms: -171 + 171 = 0
0 + -3x + x2 = 0 + 171
-3x + x2 = 0 + 171

Combine like terms: 0 + 171 = 171
-3x + x2 = 171

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = 171 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 171 + 2.25

Combine like terms: 171 + 2.25 = 173.25
2.25 + -3x + x2 = 173.25

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 173.25

Calculate the square root of the right side: 13.162446581

Break this problem into two subproblems by setting 
(x + -1.5) equal to 13.162446581 and -13.162446581.

Subproblem 1

x + -1.5 = 13.162446581 Simplifying x + -1.5 = 13.162446581 Reorder the terms: -1.5 + x = 13.162446581 Solving -1.5 + x = 13.162446581 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 13.162446581 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 13.162446581 + 1.5 x = 13.162446581 + 1.5 Combine like terms: 13.162446581 + 1.5 = 14.662446581 x = 14.662446581 Simplifying x = 14.662446581

Subproblem 2

x + -1.5 = -13.162446581 Simplifying x + -1.5 = -13.162446581 Reorder the terms: -1.5 + x = -13.162446581 Solving -1.5 + x = -13.162446581 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -13.162446581 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -13.162446581 + 1.5 x = -13.162446581 + 1.5 Combine like terms: -13.162446581 + 1.5 = -11.662446581 x = -11.662446581 Simplifying x = -11.662446581

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.662446581, -11.662446581}

See similar equations:

| (x+y+1)*dx+(2*x+2*y+1)*dy=0 | | 13-b/6=2-o.5b/4 | | 2(2x+9)=4x-5 | | X=x^3+6x^2+5x-12 | | 2(x-3)-x-x=9 | | x^2-62x+368=0 | | 6/13i | | ydx+(2x-xy+2)dy=0 | | 2b^2-2b-60=0 | | -8-x=-3x-2 | | 3x+18+9x-27=99 | | 3x+18+9x-27=00 | | 2x+9=-31-6x | | x+23+x+23=-6 | | 145+10n=115+15n | | -50+16y+4=4(5y-5)-5 | | b=8u^2v | | 4n+(-5)=-29 | | 10(c-5)+9=3+c-44 | | 3p+6q=p-3q | | x^2-3x-130= | | 8x+3y=3500 | | 3/-4=x/-16 | | 2b+a=20 | | 738=78+30m | | C=4c^2+d | | 610=64+26m | | 99-4s-6s=-5 | | 4.9x+4.4=19.9 | | 4m+24=0 | | 99-2s-6s=-1 | | -5+4+2x=13 |

Equations solver categories