x^2+2x+10=11

Simple and best practice solution for x^2+2x+10=11 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+10=11 equation:


Simplifying
x2 + 2x + 10 = 11

Reorder the terms:
10 + 2x + x2 = 11

Solving
10 + 2x + x2 = 11

Solving for variable 'x'.

Reorder the terms:
10 + -11 + 2x + x2 = 11 + -11

Combine like terms: 10 + -11 = -1
-1 + 2x + x2 = 11 + -11

Combine like terms: 11 + -11 = 0
-1 + 2x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + 2x + 1 + x2 = 0 + 1

Reorder the terms:
-1 + 1 + 2x + x2 = 0 + 1

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

Combine like terms: 0 + 1 = 1
2x + x2 = 1

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 = 1 + 1

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

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

Factor a perfect square on the left side:
(x + 1)(x + 1) = 2

Calculate the square root of the right side: 1.414213562

Break this problem into two subproblems by setting 
(x + 1) equal to 1.414213562 and -1.414213562.

Subproblem 1

x + 1 = 1.414213562 Simplifying x + 1 = 1.414213562 Reorder the terms: 1 + x = 1.414213562 Solving 1 + x = 1.414213562 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 = 1.414213562 + -1 Combine like terms: 1 + -1 = 0 0 + x = 1.414213562 + -1 x = 1.414213562 + -1 Combine like terms: 1.414213562 + -1 = 0.414213562 x = 0.414213562 Simplifying x = 0.414213562

Subproblem 2

x + 1 = -1.414213562 Simplifying x + 1 = -1.414213562 Reorder the terms: 1 + x = -1.414213562 Solving 1 + x = -1.414213562 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 = -1.414213562 + -1 Combine like terms: 1 + -1 = 0 0 + x = -1.414213562 + -1 x = -1.414213562 + -1 Combine like terms: -1.414213562 + -1 = -2.414213562 x = -2.414213562 Simplifying x = -2.414213562

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.414213562, -2.414213562}

See similar equations:

| -5x-3y=-12 | | 7y-18=24 | | 7y-18=24 | | 2a^2+28a+98=0 | | 5(3+4x)-5=110 | | 2u-3=11 | | (3/8)^-2 | | 4m+7=43.8 | | (3/8)-2 | | Y-20=-12 | | 8x^3+6x^2-12x-9=0 | | -6c-4-2x=12 | | (2y+5)(3y+7)=0 | | 5x^2+2x-11=31-27x | | 5/6-1/8 | | 10y=-6x+0 | | 3x-7=-x+1 | | -3(2-5p)=-p-22 | | 4b-8=10-12 | | -3(3x+15)-(10+x)=5 | | 4(x+0)=2x+3 | | (r+3)=11 | | 6x-11=y | | 5y=5x+9 | | 20+2n=-3(n+3)-6 | | y=x^3-x | | -2/3v=4 | | log(31-7x)=1 | | -2x/5+4 | | 3x-14=85 | | 0.5x=21-3 | | 25/32x128/125 |

Equations solver categories