2x*2x-2x-1=x+4

Simple and best practice solution for 2x*2x-2x-1=x+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 2x*2x-2x-1=x+4 equation:


Simplifying
2x * 2x + -2x + -1 = x + 4

Reorder the terms for easier multiplication:
2 * 2x * x + -2x + -1 = x + 4

Multiply 2 * 2
4x * x + -2x + -1 = x + 4

Multiply x * x
4x2 + -2x + -1 = x + 4

Reorder the terms:
-1 + -2x + 4x2 = x + 4

Reorder the terms:
-1 + -2x + 4x2 = 4 + x

Solving
-1 + -2x + 4x2 = 4 + x

Solving for variable 'x'.

Reorder the terms:
-1 + -4 + -2x + -1x + 4x2 = 4 + x + -4 + -1x

Combine like terms: -1 + -4 = -5
-5 + -2x + -1x + 4x2 = 4 + x + -4 + -1x

Combine like terms: -2x + -1x = -3x
-5 + -3x + 4x2 = 4 + x + -4 + -1x

Reorder the terms:
-5 + -3x + 4x2 = 4 + -4 + x + -1x

Combine like terms: 4 + -4 = 0
-5 + -3x + 4x2 = 0 + x + -1x
-5 + -3x + 4x2 = x + -1x

Combine like terms: x + -1x = 0
-5 + -3x + 4x2 = 0

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

Divide each side by '4'.
-1.25 + -0.75x + x2 = 0

Move the constant term to the right:

Add '1.25' to each side of the equation.
-1.25 + -0.75x + 1.25 + x2 = 0 + 1.25

Reorder the terms:
-1.25 + 1.25 + -0.75x + x2 = 0 + 1.25

Combine like terms: -1.25 + 1.25 = 0.00
0.00 + -0.75x + x2 = 0 + 1.25
-0.75x + x2 = 0 + 1.25

Combine like terms: 0 + 1.25 = 1.25
-0.75x + x2 = 1.25

The x term is -0.75x.  Take half its coefficient (-0.375).
Square it (0.140625) and add it to both sides.

Add '0.140625' to each side of the equation.
-0.75x + 0.140625 + x2 = 1.25 + 0.140625

Reorder the terms:
0.140625 + -0.75x + x2 = 1.25 + 0.140625

Combine like terms: 1.25 + 0.140625 = 1.390625
0.140625 + -0.75x + x2 = 1.390625

Factor a perfect square on the left side:
(x + -0.375)(x + -0.375) = 1.390625

Calculate the square root of the right side: 1.179247642

Break this problem into two subproblems by setting 
(x + -0.375) equal to 1.179247642 and -1.179247642.

Subproblem 1

x + -0.375 = 1.179247642 Simplifying x + -0.375 = 1.179247642 Reorder the terms: -0.375 + x = 1.179247642 Solving -0.375 + x = 1.179247642 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.375' to each side of the equation. -0.375 + 0.375 + x = 1.179247642 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + x = 1.179247642 + 0.375 x = 1.179247642 + 0.375 Combine like terms: 1.179247642 + 0.375 = 1.554247642 x = 1.554247642 Simplifying x = 1.554247642

Subproblem 2

x + -0.375 = -1.179247642 Simplifying x + -0.375 = -1.179247642 Reorder the terms: -0.375 + x = -1.179247642 Solving -0.375 + x = -1.179247642 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.375' to each side of the equation. -0.375 + 0.375 + x = -1.179247642 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + x = -1.179247642 + 0.375 x = -1.179247642 + 0.375 Combine like terms: -1.179247642 + 0.375 = -0.804247642 x = -0.804247642 Simplifying x = -0.804247642

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.554247642, -0.804247642}

See similar equations:

| 6x^2-0.5x=0 | | -6(5r-7)=-198 | | 11-4x/3=19 | | 3(x+6)+3x=30 | | 20*6-12/4 | | -16=4(u-6)-8u | | -8(8x+3)=168 | | -8X-24= | | (x+1)(x-3)(x-i)(x+i)=0 | | 9x^2+11x-11=0 | | x^2+4x-2=2x+1 | | 2n-5=n+5 | | 6(7x-13)=360 | | 3x+16=x+5 | | -3(-4x+8)=12x-17 | | 5100[1/.11(3)] | | 3.25=2.3+r | | -7w+4(w-6)=-12 | | F+26=30 | | 3x+2x+90=180 | | D^2+21d-22=0 | | -9=n/11 | | 2r^2-2r+8=0 | | 1/11=x/891 | | 1-4=6 | | 4/9=396/x | | Y-1=-1/3(x-5) | | 189=274-v | | 0=x^2+12x-28 | | 5x-9+2x+6= | | 10b^2-20b-73=7 | | 4x+46=7x+1 |

Equations solver categories