x(x+8)=4.65

Simple and best practice solution for x(x+8)=4.65 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+8)=4.65 equation:


Simplifying
x(x + 8) = 4.65

Reorder the terms:
x(8 + x) = 4.65
(8 * x + x * x) = 4.65
(8x + x2) = 4.65

Solving
8x + x2 = 4.65

Solving for variable 'x'.

Reorder the terms:
-4.65 + 8x + x2 = 4.65 + -4.65

Combine like terms: 4.65 + -4.65 = 0.00
-4.65 + 8x + x2 = 0.00

Begin completing the square.

Move the constant term to the right:

Add '4.65' to each side of the equation.
-4.65 + 8x + 4.65 + x2 = 0.00 + 4.65

Reorder the terms:
-4.65 + 4.65 + 8x + x2 = 0.00 + 4.65

Combine like terms: -4.65 + 4.65 = 0.00
0.00 + 8x + x2 = 0.00 + 4.65
8x + x2 = 0.00 + 4.65

Combine like terms: 0.00 + 4.65 = 4.65
8x + x2 = 4.65

The x term is 8x.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8x + 16 + x2 = 4.65 + 16

Reorder the terms:
16 + 8x + x2 = 4.65 + 16

Combine like terms: 4.65 + 16 = 20.65
16 + 8x + x2 = 20.65

Factor a perfect square on the left side:
(x + 4)(x + 4) = 20.65

Calculate the square root of the right side: 4.544227107

Break this problem into two subproblems by setting 
(x + 4) equal to 4.544227107 and -4.544227107.

Subproblem 1

x + 4 = 4.544227107 Simplifying x + 4 = 4.544227107 Reorder the terms: 4 + x = 4.544227107 Solving 4 + x = 4.544227107 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 4.544227107 + -4 Combine like terms: 4 + -4 = 0 0 + x = 4.544227107 + -4 x = 4.544227107 + -4 Combine like terms: 4.544227107 + -4 = 0.544227107 x = 0.544227107 Simplifying x = 0.544227107

Subproblem 2

x + 4 = -4.544227107 Simplifying x + 4 = -4.544227107 Reorder the terms: 4 + x = -4.544227107 Solving 4 + x = -4.544227107 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = -4.544227107 + -4 Combine like terms: 4 + -4 = 0 0 + x = -4.544227107 + -4 x = -4.544227107 + -4 Combine like terms: -4.544227107 + -4 = -8.544227107 x = -8.544227107 Simplifying x = -8.544227107

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.544227107, -8.544227107}

See similar equations:

| 8+4(1+3n)=-18+6n | | 2+10=4 | | x+(x+8)=4.65 | | 2n=4-3(n+8) | | 3r^2+13r+4= | | -32=6(2-8n) | | 8m-34=6(m-8) | | 6d-10=-76 | | 6/5÷3/5 | | 2.3x=-8 | | 6/5÷3/5= | | 3r^2=13r+4 | | -8+9x=19 | | 6r-4(r+8)=-14-r | | 8x+2=7x+11 | | -(3x-4y)+x=0 | | -8(x+7)=8x+24 | | 45x+39=45x+6 | | v/-3=-61 | | -35+6r=-5r-6(1+3r) | | 4x+x+1=10x-5x+1 | | 3y-yz=2zfory | | 3r-36=-3(5-8r) | | -4(p-4)=-2p+14 | | 3(4x+3)=16x+4-4x+5 | | 4(8n+2)=-25-n | | 8x+16x-10=6(4x+8) | | 3340+835+167+0+x=1.2x | | -21-5v=7(-7v-3) | | 7-6/7=1/7 | | 103=x+7 | | a-x/ax/x-a |

Equations solver categories