100+3x=x(2x+6)

Simple and best practice solution for 100+3x=x(2x+6) 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+3x=x(2x+6) equation:


Simplifying
100 + 3x = x(2x + 6)

Reorder the terms:
100 + 3x = x(6 + 2x)
100 + 3x = (6 * x + 2x * x)
100 + 3x = (6x + 2x2)

Solving
100 + 3x = 6x + 2x2

Solving for variable 'x'.

Combine like terms: 3x + -6x = -3x
100 + -3x + -2x2 = 6x + 2x2 + -6x + -2x2

Reorder the terms:
100 + -3x + -2x2 = 6x + -6x + 2x2 + -2x2

Combine like terms: 6x + -6x = 0
100 + -3x + -2x2 = 0 + 2x2 + -2x2
100 + -3x + -2x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
100 + -3x + -2x2 = 0

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
-50 + 1.5x + x2 = 0

Move the constant term to the right:

Add '50' to each side of the equation.
-50 + 1.5x + 50 + x2 = 0 + 50

Reorder the terms:
-50 + 50 + 1.5x + x2 = 0 + 50

Combine like terms: -50 + 50 = 0
0 + 1.5x + x2 = 0 + 50
1.5x + x2 = 0 + 50

Combine like terms: 0 + 50 = 50
1.5x + x2 = 50

The x term is 1.5x.  Take half its coefficient (0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
1.5x + 0.5625 + x2 = 50 + 0.5625

Reorder the terms:
0.5625 + 1.5x + x2 = 50 + 0.5625

Combine like terms: 50 + 0.5625 = 50.5625
0.5625 + 1.5x + x2 = 50.5625

Factor a perfect square on the left side:
(x + 0.75)(x + 0.75) = 50.5625

Calculate the square root of the right side: 7.110731327

Break this problem into two subproblems by setting 
(x + 0.75) equal to 7.110731327 and -7.110731327.

Subproblem 1

x + 0.75 = 7.110731327 Simplifying x + 0.75 = 7.110731327 Reorder the terms: 0.75 + x = 7.110731327 Solving 0.75 + x = 7.110731327 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = 7.110731327 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = 7.110731327 + -0.75 x = 7.110731327 + -0.75 Combine like terms: 7.110731327 + -0.75 = 6.360731327 x = 6.360731327 Simplifying x = 6.360731327

Subproblem 2

x + 0.75 = -7.110731327 Simplifying x + 0.75 = -7.110731327 Reorder the terms: 0.75 + x = -7.110731327 Solving 0.75 + x = -7.110731327 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = -7.110731327 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = -7.110731327 + -0.75 x = -7.110731327 + -0.75 Combine like terms: -7.110731327 + -0.75 = -7.860731327 x = -7.860731327 Simplifying x = -7.860731327

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.360731327, -7.860731327}

See similar equations:

| 4x^3=3x-a | | 2z-4=-4z+32 | | 6(a+3)=4a | | 15(d+6)=2(d-7)+13d | | f(x)=6e^3(3)+3 | | 5m+3=-3(m+7) | | 3x-44=0 | | (x^2-4)(x+8)=(x^2-16) | | 2(4-6)=18 | | 10m-15=101 | | 5t+7=3t-3 | | 7(d+8)=4(d-6)+3d | | 10x+69=10x+67 | | 5x+8-x=6x-2[x-4] | | x^2-4*x+8=x^2-16 | | -3k+5k=6+3k | | 11+5v=2v-6-7 | | 49+5q+q^2=5+2q | | 8+6x=8+8+8x+7+3 | | 14-6y=y | | P(1)=x(2)-2x-3 | | -(9x-9y+7)= | | 3+6x+1=1+3x | | -6x-4=32 | | 7=3(x)+b | | x+2+134=180 | | 44+3q+q^2=0 | | .5(102)+11= | | 2(102)-164= | | 92=x*5 | | -4(-4b+6)=-120 | | 102-26= |

Equations solver categories