x(x-1)=3

Simple and best practice solution for x(x-1)=3 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-1)=3 equation:


Simplifying
x(x + -1) = 3

Reorder the terms:
x(-1 + x) = 3
(-1 * x + x * x) = 3
(-1x + x2) = 3

Solving
-1x + x2 = 3

Solving for variable 'x'.

Reorder the terms:
-3 + -1x + x2 = 3 + -3

Combine like terms: 3 + -3 = 0
-3 + -1x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + -1x + 3 + x2 = 0 + 3

Reorder the terms:
-3 + 3 + -1x + x2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -1x + x2 = 0 + 3
-1x + x2 = 0 + 3

Combine like terms: 0 + 3 = 3
-1x + x2 = 3

The x term is -1x.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1x + 0.25 + x2 = 3 + 0.25

Reorder the terms:
0.25 + -1x + x2 = 3 + 0.25

Combine like terms: 3 + 0.25 = 3.25
0.25 + -1x + x2 = 3.25

Factor a perfect square on the left side:
(x + -0.5)(x + -0.5) = 3.25

Calculate the square root of the right side: 1.802775638

Break this problem into two subproblems by setting 
(x + -0.5) equal to 1.802775638 and -1.802775638.

Subproblem 1

x + -0.5 = 1.802775638 Simplifying x + -0.5 = 1.802775638 Reorder the terms: -0.5 + x = 1.802775638 Solving -0.5 + x = 1.802775638 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = 1.802775638 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 1.802775638 + 0.5 x = 1.802775638 + 0.5 Combine like terms: 1.802775638 + 0.5 = 2.302775638 x = 2.302775638 Simplifying x = 2.302775638

Subproblem 2

x + -0.5 = -1.802775638 Simplifying x + -0.5 = -1.802775638 Reorder the terms: -0.5 + x = -1.802775638 Solving -0.5 + x = -1.802775638 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = -1.802775638 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -1.802775638 + 0.5 x = -1.802775638 + 0.5 Combine like terms: -1.802775638 + 0.5 = -1.302775638 x = -1.302775638 Simplifying x = -1.302775638

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.302775638, -1.302775638}

See similar equations:

| 10y-8y=6 | | N=4n-1 | | 0=x^2+53x-630 | | 8-5w=3w | | X+384=2508 | | 5h-1=1 | | 4x-2x-9x=-7-56 | | -3(2x+1)=-6x+1-2x | | w-8w=-20 | | 9y+7+2y+98=148 | | 24pq+48p= | | -11=f-8 | | x-9+11=2x-10 | | 4(x+3)=9x+11-5x+1 | | 7x-2=4x-10 | | 7h-4-3h=11 | | x^5-20=5 | | 7f=40 | | (1/6)x+(2/3)x=1 | | 12y=12x+24 | | Df-3g=4h | | 6=x+23 | | X+384x=2508 | | 6n=10n+4 | | 5n+7=11n-1 | | x^2-3x-4y=0 | | -8u+7=5u+7 | | 18n=19 | | 2y(3y-5)= | | 10-(7-3)= | | x+16+4x-5=46 | | 2+7c-2=5+(15c)+12-2(2) |

Equations solver categories