x+x(x+1)=17

Simple and best practice solution for x+x(x+1)=17 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+x(x+1)=17 equation:


Simplifying
x + x(x + 1) = 17

Reorder the terms:
x + x(1 + x) = 17
x + (1 * x + x * x) = 17
x + (1x + x2) = 17

Combine like terms: x + 1x = 2x
2x + x2 = 17

Solving
2x + x2 = 17

Solving for variable 'x'.

Reorder the terms:
-17 + 2x + x2 = 17 + -17

Combine like terms: 17 + -17 = 0
-17 + 2x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '17' to each side of the equation.
-17 + 2x + 17 + x2 = 0 + 17

Reorder the terms:
-17 + 17 + 2x + x2 = 0 + 17

Combine like terms: -17 + 17 = 0
0 + 2x + x2 = 0 + 17
2x + x2 = 0 + 17

Combine like terms: 0 + 17 = 17
2x + x2 = 17

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 = 17 + 1

Reorder the terms:
1 + 2x + x2 = 17 + 1

Combine like terms: 17 + 1 = 18
1 + 2x + x2 = 18

Factor a perfect square on the left side:
(x + 1)(x + 1) = 18

Calculate the square root of the right side: 4.242640687

Break this problem into two subproblems by setting 
(x + 1) equal to 4.242640687 and -4.242640687.

Subproblem 1

x + 1 = 4.242640687 Simplifying x + 1 = 4.242640687 Reorder the terms: 1 + x = 4.242640687 Solving 1 + x = 4.242640687 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 = 4.242640687 + -1 Combine like terms: 1 + -1 = 0 0 + x = 4.242640687 + -1 x = 4.242640687 + -1 Combine like terms: 4.242640687 + -1 = 3.242640687 x = 3.242640687 Simplifying x = 3.242640687

Subproblem 2

x + 1 = -4.242640687 Simplifying x + 1 = -4.242640687 Reorder the terms: 1 + x = -4.242640687 Solving 1 + x = -4.242640687 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 = -4.242640687 + -1 Combine like terms: 1 + -1 = 0 0 + x = -4.242640687 + -1 x = -4.242640687 + -1 Combine like terms: -4.242640687 + -1 = -5.242640687 x = -5.242640687 Simplifying x = -5.242640687

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.242640687, -5.242640687}

See similar equations:

| 5x+1=x+21 | | x+26=3(x+6) | | 7(y-2)=8(y+14) | | 4x^5-5x=k | | 110+110-x=10x | | 1x+2=22 | | 2.3x^2-5x-7.1=0 | | -110+10*x=y | | y=-110+10x | | 2x^2+2=4x | | 110+y=10*x | | 10*x=110+y | | 3x+13=-2 | | 1*1= | | 10c+5+3(2c-2)= | | 3x+13= | | 4x^3-16x^2+11x-1=0 | | K+13=5k+7 | | 26-w=7w+2 | | x(15x+1)=6 | | 9+2m=12-m | | 8x^2-16x=0 | | x^4=125x | | 9y^2+12y-5=0 | | 9y^2=12y-5 | | 3(x-1)=x+7 | | 6y+5x=7 | | 7+2+5=143547 | | 5+3+2=151022 | | -2x=4b+3a^2+6ab | | 7p^2-38p-24=0 | | 15b^2+4b-4=0 |

Equations solver categories