(x-1)(x+1)+2=4x

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


Simplifying
(x + -1)(x + 1) + 2 = 4x

Reorder the terms:
(-1 + x)(x + 1) + 2 = 4x

Reorder the terms:
(-1 + x)(1 + x) + 2 = 4x

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

Combine like terms: -1x + 1x = 0
(-1 + 0 + x2) + 2 = 4x
(-1 + x2) + 2 = 4x

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

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

Solving
1 + x2 = 4x

Solving for variable 'x'.

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

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

Begin completing the square.

Move the constant term to the right:

Add '-1' to each side of the equation.
1 + -4x + -1 + x2 = 0 + -1

Reorder the terms:
1 + -1 + -4x + x2 = 0 + -1

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

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

The x term is -4x.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x + 4 + x2 = -1 + 4

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

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

Factor a perfect square on the left side:
(x + -2)(x + -2) = 3

Calculate the square root of the right side: 1.732050808

Break this problem into two subproblems by setting 
(x + -2) equal to 1.732050808 and -1.732050808.

Subproblem 1

x + -2 = 1.732050808 Simplifying x + -2 = 1.732050808 Reorder the terms: -2 + x = 1.732050808 Solving -2 + x = 1.732050808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = 1.732050808 + 2 Combine like terms: -2 + 2 = 0 0 + x = 1.732050808 + 2 x = 1.732050808 + 2 Combine like terms: 1.732050808 + 2 = 3.732050808 x = 3.732050808 Simplifying x = 3.732050808

Subproblem 2

x + -2 = -1.732050808 Simplifying x + -2 = -1.732050808 Reorder the terms: -2 + x = -1.732050808 Solving -2 + x = -1.732050808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = -1.732050808 + 2 Combine like terms: -2 + 2 = 0 0 + x = -1.732050808 + 2 x = -1.732050808 + 2 Combine like terms: -1.732050808 + 2 = 0.267949192 x = 0.267949192 Simplifying x = 0.267949192

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.732050808, 0.267949192}

See similar equations:

| 40x+66x=3360 | | 25=55-m | | (x-4)(x+4)+54=14x | | 11*(x-3)=44 | | 8.2x+7x-11.2=4+6x-1x | | 4/9.95 | | 5n=3n-8 | | 1=n+61 | | 4x^4-12x^3=0 | | x^3+4x^2+25=0 | | 4ln(2x)=-4 | | 3x+9+5x-7=pt | | (3u-4)(9+u)=0 | | 3x-2/5x=6/11 | | 7x+30=-3x+50 | | 5/9y1/18= | | 5/9y1/18 | | (4x+5)+(5x+40)=280 | | 2/5•4.25 | | 31n^2-12n=0 | | m+2*-3=3 | | m+2*-3= | | -8x^2+16x-3=0 | | m+2x-3=3 | | x+3-(6-15x)=12(6x-4)-3x+4 | | 42+14*3-(26+13)=n | | 7y+2+2y+3=13y-15 | | 43+14*3-(26+13)=n | | 6-7/6 | | 14n-5n^3=0 | | d-1=1/2d-1 | | 8x+4=8+5x |

Equations solver categories