20x+x^2=39996

Simple and best practice solution for 20x+x^2=39996 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 20x+x^2=39996 equation:


Simplifying
20x + x2 = 39996

Solving
20x + x2 = 39996

Solving for variable 'x'.

Reorder the terms:
-39996 + 20x + x2 = 39996 + -39996

Combine like terms: 39996 + -39996 = 0
-39996 + 20x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '39996' to each side of the equation.
-39996 + 20x + 39996 + x2 = 0 + 39996

Reorder the terms:
-39996 + 39996 + 20x + x2 = 0 + 39996

Combine like terms: -39996 + 39996 = 0
0 + 20x + x2 = 0 + 39996
20x + x2 = 0 + 39996

Combine like terms: 0 + 39996 = 39996
20x + x2 = 39996

The x term is 20x.  Take half its coefficient (10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
20x + 100 + x2 = 39996 + 100

Reorder the terms:
100 + 20x + x2 = 39996 + 100

Combine like terms: 39996 + 100 = 40096
100 + 20x + x2 = 40096

Factor a perfect square on the left side:
(x + 10)(x + 10) = 40096

Calculate the square root of the right side: 200.239856173

Break this problem into two subproblems by setting 
(x + 10) equal to 200.239856173 and -200.239856173.

Subproblem 1

x + 10 = 200.239856173 Simplifying x + 10 = 200.239856173 Reorder the terms: 10 + x = 200.239856173 Solving 10 + x = 200.239856173 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + x = 200.239856173 + -10 Combine like terms: 10 + -10 = 0 0 + x = 200.239856173 + -10 x = 200.239856173 + -10 Combine like terms: 200.239856173 + -10 = 190.239856173 x = 190.239856173 Simplifying x = 190.239856173

Subproblem 2

x + 10 = -200.239856173 Simplifying x + 10 = -200.239856173 Reorder the terms: 10 + x = -200.239856173 Solving 10 + x = -200.239856173 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + x = -200.239856173 + -10 Combine like terms: 10 + -10 = 0 0 + x = -200.239856173 + -10 x = -200.239856173 + -10 Combine like terms: -200.239856173 + -10 = -210.239856173 x = -210.239856173 Simplifying x = -210.239856173

Solution

The solution to the problem is based on the solutions from the subproblems. x = {190.239856173, -210.239856173}

See similar equations:

| 16a-a^2=55 | | y/8-13/8=14 | | 12k^2+15=16k+20 | | -1.5y+0.5=1 | | (100x+10z+y)-(100x+10y+10z)=36 | | 5y(2y-5)=0 | | (2k-3)x^2-(4k+1)+(5k+8)=0 | | (5000+y)-0.015(5000+y)=5000 | | 12x^2+6x-6= | | (500+y)-0.015(500+y)=500 | | 42x+18= | | (x+y)-0.015(x+y)=x | | 1/6(x-3) | | -4y+8=-24 | | 0.2ln(2+x)=.5 | | 74=5x+23y+3z | | y(2y-6)=0 | | (24x)+2=40 | | 0=4x-(128/x^2) | | 1001-635=61p | | 7x=20.3x | | 25n=50*24 | | 6y+9=x | | 6x+9=2x+7 | | 2x-y=3(x-2) | | 2.5(x-2y)=10 | | 84*5=(6*7)y | | 6ab-2ab= | | 760/10=227p | | 8=2-3y | | 5(x+3)-4(x-9)=2(2x+1) | | y-144=12*12 |

Equations solver categories