10=x^2+8x

Simple and best practice solution for 10=x^2+8x 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 10=x^2+8x equation:


Simplifying
10 = x2 + 8x

Reorder the terms:
10 = 8x + x2

Solving
10 = 8x + x2

Solving for variable 'x'.

Reorder the terms:
10 + -8x + -1x2 = 8x + -8x + x2 + -1x2

Combine like terms: 8x + -8x = 0
10 + -8x + -1x2 = 0 + x2 + -1x2
10 + -8x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
10 + -8x + -1x2 = 0

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

Divide each side by '-1'.
-10 + 8x + x2 = 0

Move the constant term to the right:

Add '10' to each side of the equation.
-10 + 8x + 10 + x2 = 0 + 10

Reorder the terms:
-10 + 10 + 8x + x2 = 0 + 10

Combine like terms: -10 + 10 = 0
0 + 8x + x2 = 0 + 10
8x + x2 = 0 + 10

Combine like terms: 0 + 10 = 10
8x + x2 = 10

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 = 10 + 16

Reorder the terms:
16 + 8x + x2 = 10 + 16

Combine like terms: 10 + 16 = 26
16 + 8x + x2 = 26

Factor a perfect square on the left side:
(x + 4)(x + 4) = 26

Calculate the square root of the right side: 5.099019514

Break this problem into two subproblems by setting 
(x + 4) equal to 5.099019514 and -5.099019514.

Subproblem 1

x + 4 = 5.099019514 Simplifying x + 4 = 5.099019514 Reorder the terms: 4 + x = 5.099019514 Solving 4 + x = 5.099019514 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 = 5.099019514 + -4 Combine like terms: 4 + -4 = 0 0 + x = 5.099019514 + -4 x = 5.099019514 + -4 Combine like terms: 5.099019514 + -4 = 1.099019514 x = 1.099019514 Simplifying x = 1.099019514

Subproblem 2

x + 4 = -5.099019514 Simplifying x + 4 = -5.099019514 Reorder the terms: 4 + x = -5.099019514 Solving 4 + x = -5.099019514 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 = -5.099019514 + -4 Combine like terms: 4 + -4 = 0 0 + x = -5.099019514 + -4 x = -5.099019514 + -4 Combine like terms: -5.099019514 + -4 = -9.099019514 x = -9.099019514 Simplifying x = -9.099019514

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.099019514, -9.099019514}

See similar equations:

| 4h+7+2h+13=56 | | 4÷2/5 | | 15x-7=5(3*2)+11 | | 5(x+2)+9x= | | 5h+5v=t | | 2w-7= | | 11x-209=4x-6 | | log(15+5x)=2 | | 3(w+7)-5w=x+12 | | w-17/9=12 | | 8d-9-3d-20=1 | | -13÷1/3 | | 11t+2t+7=33 | | f=10b+2 | | 2.3e-9=2300000000 | | 19m+23n+m-3n=20m+20n | | 6p-17=19 | | 3x=4y+4 | | -5(4x-6)=10x+9 | | 12/Sin(47) | | 3(4x-7)-2(x+9)=y | | X=12/Sin(47) | | 9t-3t=6t | | 2n+3s= | | 2(3x+4)=8x-15 | | 2.3e-9=0.00000000023 | | -2(x-9)=-4(x+7) | | y=-0.60x+136 | | 12+3q=30 | | 180-2x=2y | | 3(2x-6)+4(-3x+8)= | | b+0.17b=b |

Equations solver categories