x^2-x=4.5

Simple and best practice solution for x^2-x=4.5 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-x=4.5 equation:


Simplifying
x2 + -1x = 4.5

Reorder the terms:
-1x + x2 = 4.5

Solving
-1x + x2 = 4.5

Solving for variable 'x'.

Reorder the terms:
-4.5 + -1x + x2 = 4.5 + -4.5

Combine like terms: 4.5 + -4.5 = 0.0
-4.5 + -1x + x2 = 0.0

Begin completing the square.

Move the constant term to the right:

Add '4.5' to each side of the equation.
-4.5 + -1x + 4.5 + x2 = 0.0 + 4.5

Reorder the terms:
-4.5 + 4.5 + -1x + x2 = 0.0 + 4.5

Combine like terms: -4.5 + 4.5 = 0.0
0.0 + -1x + x2 = 0.0 + 4.5
-1x + x2 = 0.0 + 4.5

Combine like terms: 0.0 + 4.5 = 4.5
-1x + x2 = 4.5

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 = 4.5 + 0.25

Reorder the terms:
0.25 + -1x + x2 = 4.5 + 0.25

Combine like terms: 4.5 + 0.25 = 4.75
0.25 + -1x + x2 = 4.75

Factor a perfect square on the left side:
(x + -0.5)(x + -0.5) = 4.75

Calculate the square root of the right side: 2.179449472

Break this problem into two subproblems by setting 
(x + -0.5) equal to 2.179449472 and -2.179449472.

Subproblem 1

x + -0.5 = 2.179449472 Simplifying x + -0.5 = 2.179449472 Reorder the terms: -0.5 + x = 2.179449472 Solving -0.5 + x = 2.179449472 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 = 2.179449472 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 2.179449472 + 0.5 x = 2.179449472 + 0.5 Combine like terms: 2.179449472 + 0.5 = 2.679449472 x = 2.679449472 Simplifying x = 2.679449472

Subproblem 2

x + -0.5 = -2.179449472 Simplifying x + -0.5 = -2.179449472 Reorder the terms: -0.5 + x = -2.179449472 Solving -0.5 + x = -2.179449472 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 = -2.179449472 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -2.179449472 + 0.5 x = -2.179449472 + 0.5 Combine like terms: -2.179449472 + 0.5 = -1.679449472 x = -1.679449472 Simplifying x = -1.679449472

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.679449472, -1.679449472}

See similar equations:

| x^2/3=7.5 | | 6.3+a-3.3=2.3+15 | | 2*3+x=-15 | | x+2(lnx)=0 | | 2x-10y=13 | | 8w+9=w+30 | | 7+2f=-2+f | | 3(c+6)=3 | | x+20+10x= | | -9+2k=k | | z+12z=30 | | 2j-1=-10+5j | | -9z-3z=6/7 | | 4+7s=3s | | (9x+2)=(5x-1)+23 | | 10x-2*5x+4=4 | | -21/25= | | -2.4-6.4= | | 2b-3=b-9 | | 6x+9.67=3x+13 | | 2u+6=u | | y-3.1=5 | | 6-6w=-5w | | 33.6/10= | | 5x-4+2x+8= | | (-2*5+10)-(-6*5+5*4+12)+(5+8*4-16)= | | x+1.9=8.8 | | 8=(-2)tan(3) | | 4.84(0.4+0.6)= | | 13+11x=90 | | 30=b/2 | | f(x)=4+ln(x-3) |

Equations solver categories