x^2+2x-111=0

Simple and best practice solution for x^2+2x-111=0 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-111=0 equation:


Simplifying
x2 + 2x + -111 = 0

Reorder the terms:
-111 + 2x + x2 = 0

Solving
-111 + 2x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '111' to each side of the equation.
-111 + 2x + 111 + x2 = 0 + 111

Reorder the terms:
-111 + 111 + 2x + x2 = 0 + 111

Combine like terms: -111 + 111 = 0
0 + 2x + x2 = 0 + 111
2x + x2 = 0 + 111

Combine like terms: 0 + 111 = 111
2x + x2 = 111

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 = 111 + 1

Reorder the terms:
1 + 2x + x2 = 111 + 1

Combine like terms: 111 + 1 = 112
1 + 2x + x2 = 112

Factor a perfect square on the left side:
(x + 1)(x + 1) = 112

Calculate the square root of the right side: 10.583005244

Break this problem into two subproblems by setting 
(x + 1) equal to 10.583005244 and -10.583005244.

Subproblem 1

x + 1 = 10.583005244 Simplifying x + 1 = 10.583005244 Reorder the terms: 1 + x = 10.583005244 Solving 1 + x = 10.583005244 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 = 10.583005244 + -1 Combine like terms: 1 + -1 = 0 0 + x = 10.583005244 + -1 x = 10.583005244 + -1 Combine like terms: 10.583005244 + -1 = 9.583005244 x = 9.583005244 Simplifying x = 9.583005244

Subproblem 2

x + 1 = -10.583005244 Simplifying x + 1 = -10.583005244 Reorder the terms: 1 + x = -10.583005244 Solving 1 + x = -10.583005244 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 = -10.583005244 + -1 Combine like terms: 1 + -1 = 0 0 + x = -10.583005244 + -1 x = -10.583005244 + -1 Combine like terms: -10.583005244 + -1 = -11.583005244 x = -11.583005244 Simplifying x = -11.583005244

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.583005244, -11.583005244}

See similar equations:

| g(j(x))=-29 | | -7(x+1)-18=13+4 | | 72=4x+11y | | 37+4x=75 | | 2(3x-4)=5(1-3x)+8 | | 0=3t^2-14t+20 | | -6+r=9 | | -2(2x+1)=-3(x+2) | | x^2+2x+10=121 | | ln(1+x)=1.2 | | -8-5=6x+8-5x | | 3x+10-2x=19 | | 9(4-r)=5(-3r-12) | | 22=(2b+4)+b | | -3x-3x=24-6 | | 7x-9=10x-12 | | -(2-m)=-(9m+2) | | 9x+4=5x+4 | | y=74.5x+5094.5 | | 1/2*-11/28= | | 3b+2=26 | | -9+24=m-1 | | 36x^2-18x+108=0 | | 2(x+3)=8x-12 | | -(-9.5+-1.5y)+3y=-13 | | 11x+4(2)=5 | | 11(0)+4y=5 | | -2x(13+3y)-3y=19 | | 0=x^3+5x^2+2x-8 | | 60=-7x+11 | | X+7=4x-14 | | 2m^2+8=5m |

Equations solver categories