x*(x-3.1)=23.6

Simple and best practice solution for x*(x-3.1)=23.6 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*(x-3.1)=23.6 equation:


Simplifying
x(x + -3.1) = 23.6

Reorder the terms:
x(-3.1 + x) = 23.6
(-3.1 * x + x * x) = 23.6
(-3.1x + x2) = 23.6

Solving
-3.1x + x2 = 23.6

Solving for variable 'x'.

Reorder the terms:
-23.6 + -3.1x + x2 = 23.6 + -23.6

Combine like terms: 23.6 + -23.6 = 0.0
-23.6 + -3.1x + x2 = 0.0

Begin completing the square.

Move the constant term to the right:

Add '23.6' to each side of the equation.
-23.6 + -3.1x + 23.6 + x2 = 0.0 + 23.6

Reorder the terms:
-23.6 + 23.6 + -3.1x + x2 = 0.0 + 23.6

Combine like terms: -23.6 + 23.6 = 0.0
0.0 + -3.1x + x2 = 0.0 + 23.6
-3.1x + x2 = 0.0 + 23.6

Combine like terms: 0.0 + 23.6 = 23.6
-3.1x + x2 = 23.6

The x term is -3.1x.  Take half its coefficient (-1.55).
Square it (2.4025) and add it to both sides.

Add '2.4025' to each side of the equation.
-3.1x + 2.4025 + x2 = 23.6 + 2.4025

Reorder the terms:
2.4025 + -3.1x + x2 = 23.6 + 2.4025

Combine like terms: 23.6 + 2.4025 = 26.0025
2.4025 + -3.1x + x2 = 26.0025

Factor a perfect square on the left side:
(x + -1.55)(x + -1.55) = 26.0025

Calculate the square root of the right side: 5.099264653

Break this problem into two subproblems by setting 
(x + -1.55) equal to 5.099264653 and -5.099264653.

Subproblem 1

x + -1.55 = 5.099264653 Simplifying x + -1.55 = 5.099264653 Reorder the terms: -1.55 + x = 5.099264653 Solving -1.55 + x = 5.099264653 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.55' to each side of the equation. -1.55 + 1.55 + x = 5.099264653 + 1.55 Combine like terms: -1.55 + 1.55 = 0.00 0.00 + x = 5.099264653 + 1.55 x = 5.099264653 + 1.55 Combine like terms: 5.099264653 + 1.55 = 6.649264653 x = 6.649264653 Simplifying x = 6.649264653

Subproblem 2

x + -1.55 = -5.099264653 Simplifying x + -1.55 = -5.099264653 Reorder the terms: -1.55 + x = -5.099264653 Solving -1.55 + x = -5.099264653 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.55' to each side of the equation. -1.55 + 1.55 + x = -5.099264653 + 1.55 Combine like terms: -1.55 + 1.55 = 0.00 0.00 + x = -5.099264653 + 1.55 x = -5.099264653 + 1.55 Combine like terms: -5.099264653 + 1.55 = -3.549264653 x = -3.549264653 Simplifying x = -3.549264653

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.649264653, -3.549264653}

See similar equations:

| 19=-2X-X-2 | | 3x+30=-2x+5 | | y+1=15x+5 | | -13f+17=-19-19f+3f | | 12(b-3)=52 | | 11(x+2)=33 | | 20m+4=2m+20m-20 | | 2(x-3)+3=2x-1 | | -6z-9z=-4z-1-8z | | (B-3)=52 | | G(X)=-X^2+6X+1G(-4) | | -20-3w=-7w+-9w | | x^2-3.1x=23.6 | | 4[-7-2x]=-124 | | -14-8x=-124 | | -4.5=-0.15 | | -8c-5=27 | | G(X)=-X^2+6X+1 | | 0.5-x+3.5=x-6 | | 20+11r=-20+6r+15 | | (x+10)(y-40)= | | 13+0.9x=16+0.7y | | 6p+4=2p-10 | | -3x^6+15x^4=0 | | 3y-7=2y-3 | | 7[2x+10]=140 | | 8-5-12n=-11n+19 | | 5[10+6x]=320 | | Q+5x=7x+r | | -4[4x+3]=-12 | | 15x-18=-3x^2 | | 18x-7=12x-1 |

Equations solver categories