100=x^2+6x

Simple and best practice solution for 100=x^2+6x 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 100=x^2+6x equation:


Simplifying
100 = x2 + 6x

Reorder the terms:
100 = 6x + x2

Solving
100 = 6x + x2

Solving for variable 'x'.

Reorder the terms:
100 + -6x + -1x2 = 6x + -6x + x2 + -1x2

Combine like terms: 6x + -6x = 0
100 + -6x + -1x2 = 0 + x2 + -1x2
100 + -6x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
100 + -6x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-100 + 6x + x2 = 0

Move the constant term to the right:

Add '100' to each side of the equation.
-100 + 6x + 100 + x2 = 0 + 100

Reorder the terms:
-100 + 100 + 6x + x2 = 0 + 100

Combine like terms: -100 + 100 = 0
0 + 6x + x2 = 0 + 100
6x + x2 = 0 + 100

Combine like terms: 0 + 100 = 100
6x + x2 = 100

The x term is 6x.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6x + 9 + x2 = 100 + 9

Reorder the terms:
9 + 6x + x2 = 100 + 9

Combine like terms: 100 + 9 = 109
9 + 6x + x2 = 109

Factor a perfect square on the left side:
(x + 3)(x + 3) = 109

Calculate the square root of the right side: 10.440306509

Break this problem into two subproblems by setting 
(x + 3) equal to 10.440306509 and -10.440306509.

Subproblem 1

x + 3 = 10.440306509 Simplifying x + 3 = 10.440306509 Reorder the terms: 3 + x = 10.440306509 Solving 3 + x = 10.440306509 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 10.440306509 + -3 Combine like terms: 3 + -3 = 0 0 + x = 10.440306509 + -3 x = 10.440306509 + -3 Combine like terms: 10.440306509 + -3 = 7.440306509 x = 7.440306509 Simplifying x = 7.440306509

Subproblem 2

x + 3 = -10.440306509 Simplifying x + 3 = -10.440306509 Reorder the terms: 3 + x = -10.440306509 Solving 3 + x = -10.440306509 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = -10.440306509 + -3 Combine like terms: 3 + -3 = 0 0 + x = -10.440306509 + -3 x = -10.440306509 + -3 Combine like terms: -10.440306509 + -3 = -13.440306509 x = -13.440306509 Simplifying x = -13.440306509

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.440306509, -13.440306509}

See similar equations:

| 9+2x=2(-x+3)-17 | | -1-3(-2+6x)=-21-5x | | -8=4r+4r | | 5X-24=2X+60 | | a=7(x+4) | | (5x-1)(5x+1)= | | 10*x=7.9788 | | -6+x+9=-10 | | y=6x-x^2+1 | | 7.9788/10 | | 10/7.9788 | | 5x+-1=3y | | 2-3x-1-4x=10 | | 15=-6+v | | X-17+19=63 | | s+(s+-0.45)+2(s+-0.45)=9.25 | | 38-6x=-14-10x | | 3y^2+10y+3= | | y^2=-3.5x | | (2x-12)+(0.5xy-10)= | | 3t=90 | | y^2=-8x | | s+(s-0.45)-2(s-0.45)=9.25 | | 3+6(x+2)=4x-9 | | 5c=32 | | 10x^2-10=-71 | | b+10=6(-2b-4) | | x^2-1025=0 | | 4255/3035 | | g(x)=x^2-7 | | 15z^7-18z^3/3z^3 | | -10x+8y=-6 |

Equations solver categories