x^2-18x+4=

Simple and best practice solution for x^2-18x+4= 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^2-18x+4= equation:


Simplifying
x2 + -18x + 4 = 0

Reorder the terms:
4 + -18x + x2 = 0

Solving
4 + -18x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-4' to each side of the equation.
4 + -18x + -4 + x2 = 0 + -4

Reorder the terms:
4 + -4 + -18x + x2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -18x + x2 = 0 + -4
-18x + x2 = 0 + -4

Combine like terms: 0 + -4 = -4
-18x + x2 = -4

The x term is -18x.  Take half its coefficient (-9).
Square it (81) and add it to both sides.

Add '81' to each side of the equation.
-18x + 81 + x2 = -4 + 81

Reorder the terms:
81 + -18x + x2 = -4 + 81

Combine like terms: -4 + 81 = 77
81 + -18x + x2 = 77

Factor a perfect square on the left side:
(x + -9)(x + -9) = 77

Calculate the square root of the right side: 8.774964387

Break this problem into two subproblems by setting 
(x + -9) equal to 8.774964387 and -8.774964387.

Subproblem 1

x + -9 = 8.774964387 Simplifying x + -9 = 8.774964387 Reorder the terms: -9 + x = 8.774964387 Solving -9 + x = 8.774964387 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + x = 8.774964387 + 9 Combine like terms: -9 + 9 = 0 0 + x = 8.774964387 + 9 x = 8.774964387 + 9 Combine like terms: 8.774964387 + 9 = 17.774964387 x = 17.774964387 Simplifying x = 17.774964387

Subproblem 2

x + -9 = -8.774964387 Simplifying x + -9 = -8.774964387 Reorder the terms: -9 + x = -8.774964387 Solving -9 + x = -8.774964387 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + x = -8.774964387 + 9 Combine like terms: -9 + 9 = 0 0 + x = -8.774964387 + 9 x = -8.774964387 + 9 Combine like terms: -8.774964387 + 9 = 0.225035613 x = 0.225035613 Simplifying x = 0.225035613

Solution

The solution to the problem is based on the solutions from the subproblems. x = {17.774964387, 0.225035613}

See similar equations:

| 9x-4=9x-54 | | 4/9x+4/9=-5/9x-2/3 | | 9x-4=9(x-6) | | (X+1)^1/3=-5 | | 3x-1=-x-9 | | 3p-p= | | 2x/3+1=9 | | 3p-3= | | 7x+7=7x+17 | | 1/5(2x+4)=3(4-3x)+17 | | X/9=5/11 | | 3b-6=7b-22 | | 12/30x15/18 | | 4x+5/x+6-2=0 | | (7xy+51x-20y)+(9x-7y+11xy)= | | 3z/z^2-9-2/3-z | | 21/2/12/3 | | -7(2x+2)=5(2x+1) | | 5a-4=a+4 | | (ax)(4a)=a^2 | | y^4/3*y^-1/3 | | x^2-8x-4=3x^2-12x | | 6x-1=2x^2+11x-3 | | x^2+y^2-4x+2y-4=0 | | x^2-2x+13=9x+5 | | 2(s+3)+4s-5+s=148 | | y=-x^2-4x-7 | | 4x^2-10x+5= | | 10x^2-12X=3 | | -2x^2+6x+3= | | 2(x+8)=x-4 | | -x^2-3x-2= |

Equations solver categories