x^2+2x+1=3

Simple and best practice solution for x^2+2x+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^2+2x+1=3 equation:


Simplifying
x2 + 2x + 1 = 3

Reorder the terms:
1 + 2x + x2 = 3

Solving
1 + 2x + x2 = 3

Solving for variable 'x'.

Reorder the terms:
1 + -3 + 2x + x2 = 3 + -3

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

Combine like terms: 3 + -3 = 0
-2 + 2x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + 2x + 2 + x2 = 0 + 2

Reorder the terms:
-2 + 2 + 2x + x2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + 2x + x2 = 0 + 2
2x + x2 = 0 + 2

Combine like terms: 0 + 2 = 2
2x + x2 = 2

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = 2 + 1

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

Combine like terms: 2 + 1 = 3
1 + 2x + x2 = 3

Factor a perfect square on the left side:
(x + 1)(x + 1) = 3

Calculate the square root of the right side: 1.732050808

Break this problem into two subproblems by setting 
(x + 1) equal to 1.732050808 and -1.732050808.

Subproblem 1

x + 1 = 1.732050808 Simplifying x + 1 = 1.732050808 Reorder the terms: 1 + x = 1.732050808 Solving 1 + x = 1.732050808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 1.732050808 + -1 Combine like terms: 1 + -1 = 0 0 + x = 1.732050808 + -1 x = 1.732050808 + -1 Combine like terms: 1.732050808 + -1 = 0.732050808 x = 0.732050808 Simplifying x = 0.732050808

Subproblem 2

x + 1 = -1.732050808 Simplifying x + 1 = -1.732050808 Reorder the terms: 1 + x = -1.732050808 Solving 1 + x = -1.732050808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -1.732050808 + -1 Combine like terms: 1 + -1 = 0 0 + x = -1.732050808 + -1 x = -1.732050808 + -1 Combine like terms: -1.732050808 + -1 = -2.732050808 x = -2.732050808 Simplifying x = -2.732050808

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.732050808, -2.732050808}

See similar equations:

| 9y-8=37-7y | | 3(x^3+2x^2-9x-18)=0 | | .25n+.1n=98 | | 5z-8=z | | 2a-5a=-3a | | x^2+2x+1=-3 | | 2x-3(x+4)=10 | | 33-10x= | | -2a-5a=-3a | | 5-x-2=3+4 | | -.2q-4=9 | | -6(4x-6)=4 | | 1+8n=12n-3 | | 7-4n=6-3n | | 10x-33= | | 10m^2+30m-3m+5=0 | | -5(7+x)=-10 | | V=(x-5) | | -7h-14+13h+6=-5 | | 3x-3+x+3=2x-1+2x-1+2x | | 14-2n=4n | | 10m^2+30m+5=0 | | 5m^4-20=0 | | 3t+6+4t=9t-2-t | | 4x^2+4y^2+16y=0 | | 4x+3-9= | | -8x+1+4x+10=3 | | 4-(2x-3)=3(x+1) | | -3(3x+7)+2(x-7)= | | 3n-4=1 | | -3x-18+4x=4 | | 5x-4x+8=8 |

Equations solver categories