x^2-120x+72=0

Simple and best practice solution for x^2-120x+72=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^2-120x+72=0 equation:


Simplifying
x2 + -120x + 72 = 0

Reorder the terms:
72 + -120x + x2 = 0

Solving
72 + -120x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-72' to each side of the equation.
72 + -120x + -72 + x2 = 0 + -72

Reorder the terms:
72 + -72 + -120x + x2 = 0 + -72

Combine like terms: 72 + -72 = 0
0 + -120x + x2 = 0 + -72
-120x + x2 = 0 + -72

Combine like terms: 0 + -72 = -72
-120x + x2 = -72

The x term is -120x.  Take half its coefficient (-60).
Square it (3600) and add it to both sides.

Add '3600' to each side of the equation.
-120x + 3600 + x2 = -72 + 3600

Reorder the terms:
3600 + -120x + x2 = -72 + 3600

Combine like terms: -72 + 3600 = 3528
3600 + -120x + x2 = 3528

Factor a perfect square on the left side:
(x + -60)(x + -60) = 3528

Calculate the square root of the right side: 59.39696962

Break this problem into two subproblems by setting 
(x + -60) equal to 59.39696962 and -59.39696962.

Subproblem 1

x + -60 = 59.39696962 Simplifying x + -60 = 59.39696962 Reorder the terms: -60 + x = 59.39696962 Solving -60 + x = 59.39696962 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '60' to each side of the equation. -60 + 60 + x = 59.39696962 + 60 Combine like terms: -60 + 60 = 0 0 + x = 59.39696962 + 60 x = 59.39696962 + 60 Combine like terms: 59.39696962 + 60 = 119.39696962 x = 119.39696962 Simplifying x = 119.39696962

Subproblem 2

x + -60 = -59.39696962 Simplifying x + -60 = -59.39696962 Reorder the terms: -60 + x = -59.39696962 Solving -60 + x = -59.39696962 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '60' to each side of the equation. -60 + 60 + x = -59.39696962 + 60 Combine like terms: -60 + 60 = 0 0 + x = -59.39696962 + 60 x = -59.39696962 + 60 Combine like terms: -59.39696962 + 60 = 0.60303038 x = 0.60303038 Simplifying x = 0.60303038

Solution

The solution to the problem is based on the solutions from the subproblems. x = {119.39696962, 0.60303038}

See similar equations:

| 6n^2+43n+77=0 | | 3b+12=5b+2 | | 12b^2+44b+7-0= | | 8n^2+35n+12=0 | | 1.33x=2x+4 | | 7(10-3d)=5(10)-4d | | 11x-70+23=3+(2x-7)-8 | | 9m^2+13m+4=0 | | 8p^2-17p+2=0 | | X^4+x^3+17x^2=0 | | 13=24+g | | (x+3)(x+4)(x+5)(x+7)=-16 | | 6x^2-23x-28=0 | | 10x^2-123x+36=0 | | x(2x+1)(3x+1)=0 | | 10x-3x=11+10 | | 1.333x=2x+4 | | 9p^2+24p-20=0 | | 9k^2-46k-48=0 | | 8-2b=4 | | 5x^2(x-3)(x-5)=0 | | x^2-8x-29=x^2+a^2+2ax+b | | x^2-8x-29=x^2+a^2+b | | 1-4-8p-p=6-7p+3 | | 3x+5=6-4x | | 4(5p-4)=5(5p-2) | | 0+11.2=-11.2 | | 9x^2+x-5=0 | | 5x-(3x+6)=70 | | 0.625(x-2)=10 | | 3x+1+2x-3=22 | | 4*(x+1)=9 |

Equations solver categories