4x^2-5x-5=x

Simple and best practice solution for 4x^2-5x-5=x 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 4x^2-5x-5=x equation:


Simplifying
4x2 + -5x + -5 = x

Reorder the terms:
-5 + -5x + 4x2 = x

Solving
-5 + -5x + 4x2 = x

Solving for variable 'x'.

Reorder the terms:
-5 + -5x + -1x + 4x2 = x + -1x

Combine like terms: -5x + -1x = -6x
-5 + -6x + 4x2 = x + -1x

Combine like terms: x + -1x = 0
-5 + -6x + 4x2 = 0

Begin completing the square.  Divide all terms by
4 the coefficient of the squared term: 

Divide each side by '4'.
-1.25 + -1.5x + x2 = 0

Move the constant term to the right:

Add '1.25' to each side of the equation.
-1.25 + -1.5x + 1.25 + x2 = 0 + 1.25

Reorder the terms:
-1.25 + 1.25 + -1.5x + x2 = 0 + 1.25

Combine like terms: -1.25 + 1.25 = 0.00
0.00 + -1.5x + x2 = 0 + 1.25
-1.5x + x2 = 0 + 1.25

Combine like terms: 0 + 1.25 = 1.25
-1.5x + x2 = 1.25

The x term is -1.5x.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5x + 0.5625 + x2 = 1.25 + 0.5625

Reorder the terms:
0.5625 + -1.5x + x2 = 1.25 + 0.5625

Combine like terms: 1.25 + 0.5625 = 1.8125
0.5625 + -1.5x + x2 = 1.8125

Factor a perfect square on the left side:
(x + -0.75)(x + -0.75) = 1.8125

Calculate the square root of the right side: 1.346291202

Break this problem into two subproblems by setting 
(x + -0.75) equal to 1.346291202 and -1.346291202.

Subproblem 1

x + -0.75 = 1.346291202 Simplifying x + -0.75 = 1.346291202 Reorder the terms: -0.75 + x = 1.346291202 Solving -0.75 + x = 1.346291202 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = 1.346291202 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = 1.346291202 + 0.75 x = 1.346291202 + 0.75 Combine like terms: 1.346291202 + 0.75 = 2.096291202 x = 2.096291202 Simplifying x = 2.096291202

Subproblem 2

x + -0.75 = -1.346291202 Simplifying x + -0.75 = -1.346291202 Reorder the terms: -0.75 + x = -1.346291202 Solving -0.75 + x = -1.346291202 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = -1.346291202 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = -1.346291202 + 0.75 x = -1.346291202 + 0.75 Combine like terms: -1.346291202 + 0.75 = -0.596291202 x = -0.596291202 Simplifying x = -0.596291202

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.096291202, -0.596291202}

See similar equations:

| 11.25=1.25 | | B+13=45 | | 14-1/2y=x | | -8x+4(-6x-3)=116 | | -18x-9y=72 | | C-42=55 | | 6(3X+9)-2X=6(2X-6) | | 2x-3sinx-2=0 | | Y=3x-0.75 | | X+38=189 | | n/2n=-26 | | x=120x+700 | | x^2+225=(x+3)(x+3) | | y=120x+700 | | (x+9)(x-4)=y | | 8x+2+3=x+5 | | X-88.79=4.50 | | 1/2bh/12=126 | | 46=-6t-5 | | X-2i=2 | | 20(1/4u-2/5) | | 3(2x+5)=5(3x+3) | | 3(x+4)=40 | | -268=5+7(-6p+3) | | 5(3m-3+4m)=5m+62-6m | | 6.95x+55.6=111.2 | | 64/(15-7)x2-9= | | x^2-10x+22=49 | | y=1.25x+3.70 | | Log(x^38)=2 | | M-123.45=36.55 | | 33+10x=x-12 |

Equations solver categories