9x^2-127x+54=0

Simple and best practice solution for 9x^2-127x+54=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 9x^2-127x+54=0 equation:


Simplifying
9x2 + -127x + 54 = 0

Reorder the terms:
54 + -127x + 9x2 = 0

Solving
54 + -127x + 9x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
9 the coefficient of the squared term: 

Divide each side by '9'.
6 + -14.11111111x + x2 = 0

Move the constant term to the right:

Add '-6' to each side of the equation.
6 + -14.11111111x + -6 + x2 = 0 + -6

Reorder the terms:
6 + -6 + -14.11111111x + x2 = 0 + -6

Combine like terms: 6 + -6 = 0
0 + -14.11111111x + x2 = 0 + -6
-14.11111111x + x2 = 0 + -6

Combine like terms: 0 + -6 = -6
-14.11111111x + x2 = -6

The x term is -14.11111111x.  Take half its coefficient (-7.055555555).
Square it (49.78086419) and add it to both sides.

Add '49.78086419' to each side of the equation.
-14.11111111x + 49.78086419 + x2 = -6 + 49.78086419

Reorder the terms:
49.78086419 + -14.11111111x + x2 = -6 + 49.78086419

Combine like terms: -6 + 49.78086419 = 43.78086419
49.78086419 + -14.11111111x + x2 = 43.78086419

Factor a perfect square on the left side:
(x + -7.055555555)(x + -7.055555555) = 43.78086419

Calculate the square root of the right side: 6.61671098

Break this problem into two subproblems by setting 
(x + -7.055555555) equal to 6.61671098 and -6.61671098.

Subproblem 1

x + -7.055555555 = 6.61671098 Simplifying x + -7.055555555 = 6.61671098 Reorder the terms: -7.055555555 + x = 6.61671098 Solving -7.055555555 + x = 6.61671098 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7.055555555' to each side of the equation. -7.055555555 + 7.055555555 + x = 6.61671098 + 7.055555555 Combine like terms: -7.055555555 + 7.055555555 = 0.000000000 0.000000000 + x = 6.61671098 + 7.055555555 x = 6.61671098 + 7.055555555 Combine like terms: 6.61671098 + 7.055555555 = 13.672266535 x = 13.672266535 Simplifying x = 13.672266535

Subproblem 2

x + -7.055555555 = -6.61671098 Simplifying x + -7.055555555 = -6.61671098 Reorder the terms: -7.055555555 + x = -6.61671098 Solving -7.055555555 + x = -6.61671098 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7.055555555' to each side of the equation. -7.055555555 + 7.055555555 + x = -6.61671098 + 7.055555555 Combine like terms: -7.055555555 + 7.055555555 = 0.000000000 0.000000000 + x = -6.61671098 + 7.055555555 x = -6.61671098 + 7.055555555 Combine like terms: -6.61671098 + 7.055555555 = 0.438844575 x = 0.438844575 Simplifying x = 0.438844575

Solution

The solution to the problem is based on the solutions from the subproblems. x = {13.672266535, 0.438844575}

See similar equations:

| y=5x^2-10x+5 | | x^2+2x-67=0 | | a^2-a=2 | | 9x-84=5x-12 | | 3(a+1)-5=3(x-1) | | -23+r=20 | | x-6+-6xy= | | 2A^2-4a+2=0 | | -0.5(7z+4)+0.2(5z-15)= | | x+y+-5= | | 2-3(-2)= | | 3(a+5)(A+5)=0 | | -3(2x)+6= | | 5b+.5=-4.75 | | (a-5)(a+4)=0 | | 4x-3=2y | | n+m+-5= | | 36x^2+63x-18=0 | | V+91=-23 | | 15=19+2(x-18) | | 14x+14=1847295720472956 | | 7x-8=4x-9 | | 12(1+2m)=-5(1-5m) | | 2a-(-3*2)=13 | | -7(8-3p)-1=6p+33 | | -3(x-3)=-(3x-5) | | 9-(9*2)=10x-x | | 3x=18+15x | | -19+6k=2(1-k)+5k | | -35+6r=5(8r-7) | | 2(7v-4)=-38-v | | 4(-2g-1)=3g+5-11g |

Equations solver categories