x^2-121x+85=

Simple and best practice solution for x^2-121x+85= 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^2-121x+85= equation:


Simplifying
x2 + -121x + 85 = 0

Reorder the terms:
85 + -121x + x2 = 0

Solving
85 + -121x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-85' to each side of the equation.
85 + -121x + -85 + x2 = 0 + -85

Reorder the terms:
85 + -85 + -121x + x2 = 0 + -85

Combine like terms: 85 + -85 = 0
0 + -121x + x2 = 0 + -85
-121x + x2 = 0 + -85

Combine like terms: 0 + -85 = -85
-121x + x2 = -85

The x term is -121x.  Take half its coefficient (-60.5).
Square it (3660.25) and add it to both sides.

Add '3660.25' to each side of the equation.
-121x + 3660.25 + x2 = -85 + 3660.25

Reorder the terms:
3660.25 + -121x + x2 = -85 + 3660.25

Combine like terms: -85 + 3660.25 = 3575.25
3660.25 + -121x + x2 = 3575.25

Factor a perfect square on the left side:
(x + -60.5)(x + -60.5) = 3575.25

Calculate the square root of the right side: 59.793394284

Break this problem into two subproblems by setting 
(x + -60.5) equal to 59.793394284 and -59.793394284.

Subproblem 1

x + -60.5 = 59.793394284 Simplifying x + -60.5 = 59.793394284 Reorder the terms: -60.5 + x = 59.793394284 Solving -60.5 + x = 59.793394284 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '60.5' to each side of the equation. -60.5 + 60.5 + x = 59.793394284 + 60.5 Combine like terms: -60.5 + 60.5 = 0.0 0.0 + x = 59.793394284 + 60.5 x = 59.793394284 + 60.5 Combine like terms: 59.793394284 + 60.5 = 120.293394284 x = 120.293394284 Simplifying x = 120.293394284

Subproblem 2

x + -60.5 = -59.793394284 Simplifying x + -60.5 = -59.793394284 Reorder the terms: -60.5 + x = -59.793394284 Solving -60.5 + x = -59.793394284 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '60.5' to each side of the equation. -60.5 + 60.5 + x = -59.793394284 + 60.5 Combine like terms: -60.5 + 60.5 = 0.0 0.0 + x = -59.793394284 + 60.5 x = -59.793394284 + 60.5 Combine like terms: -59.793394284 + 60.5 = 0.706605716 x = 0.706605716 Simplifying x = 0.706605716

Solution

The solution to the problem is based on the solutions from the subproblems. x = {120.293394284, 0.706605716}

See similar equations:

| 6y+14=20-2y | | (X-7)*(X-7)*(X-7)*(X-7)*(X-7)= | | (n-2)(180)=3960 | | 3x-7=-52 | | -3x+9=-3(2x+4) | | 3(h+w)= | | 27x+2=0 | | 12n^2+11=n | | (n-2)(180)=1620 | | X+12=3*(x-32) | | 25(3x+5)=752 | | 5x+3y-120=3x+2y | | 2d-10=52 | | 2x(5-2)-3(x+2)+2(3x+4)= | | 1000+(0.15X)=0.2X | | -18=2x+4 | | 19=c+10 | | 3x-68=19x+17 | | 3x=x+52 | | 20=k+9 | | cosx=66 | | 3x=b+52 | | 120*5x=3x | | 22=28-w | | -2(3x-7)=38 | | 5=3.2n-6-4.8n | | 4+2x=1-x | | 4x+3=2+15 | | 19-x(x+3)=3x-x(x-6)-5 | | 120-5x=3x | | 9=8k-7 | | 23=3v+8 |

Equations solver categories