8x^2+4x+38=3x^2+5x+86x

Simple and best practice solution for 8x^2+4x+38=3x^2+5x+86x 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 8x^2+4x+38=3x^2+5x+86x equation:


Simplifying
8x2 + 4x + 38 = 3x2 + 5x + 86x

Reorder the terms:
38 + 4x + 8x2 = 3x2 + 5x + 86x

Reorder the terms:
38 + 4x + 8x2 = 5x + 86x + 3x2

Combine like terms: 5x + 86x = 91x
38 + 4x + 8x2 = 91x + 3x2

Solving
38 + 4x + 8x2 = 91x + 3x2

Solving for variable 'x'.

Reorder the terms:
38 + 4x + -91x + 8x2 + -3x2 = 91x + 3x2 + -91x + -3x2

Combine like terms: 4x + -91x = -87x
38 + -87x + 8x2 + -3x2 = 91x + 3x2 + -91x + -3x2

Combine like terms: 8x2 + -3x2 = 5x2
38 + -87x + 5x2 = 91x + 3x2 + -91x + -3x2

Reorder the terms:
38 + -87x + 5x2 = 91x + -91x + 3x2 + -3x2

Combine like terms: 91x + -91x = 0
38 + -87x + 5x2 = 0 + 3x2 + -3x2
38 + -87x + 5x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
38 + -87x + 5x2 = 0

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

Divide each side by '5'.
7.6 + -17.4x + x2 = 0

Move the constant term to the right:

Add '-7.6' to each side of the equation.
7.6 + -17.4x + -7.6 + x2 = 0 + -7.6

Reorder the terms:
7.6 + -7.6 + -17.4x + x2 = 0 + -7.6

Combine like terms: 7.6 + -7.6 = 0.0
0.0 + -17.4x + x2 = 0 + -7.6
-17.4x + x2 = 0 + -7.6

Combine like terms: 0 + -7.6 = -7.6
-17.4x + x2 = -7.6

The x term is -17.4x.  Take half its coefficient (-8.7).
Square it (75.69) and add it to both sides.

Add '75.69' to each side of the equation.
-17.4x + 75.69 + x2 = -7.6 + 75.69

Reorder the terms:
75.69 + -17.4x + x2 = -7.6 + 75.69

Combine like terms: -7.6 + 75.69 = 68.09
75.69 + -17.4x + x2 = 68.09

Factor a perfect square on the left side:
(x + -8.7)(x + -8.7) = 68.09

Calculate the square root of the right side: 8.251666498

Break this problem into two subproblems by setting 
(x + -8.7) equal to 8.251666498 and -8.251666498.

Subproblem 1

x + -8.7 = 8.251666498 Simplifying x + -8.7 = 8.251666498 Reorder the terms: -8.7 + x = 8.251666498 Solving -8.7 + x = 8.251666498 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8.7' to each side of the equation. -8.7 + 8.7 + x = 8.251666498 + 8.7 Combine like terms: -8.7 + 8.7 = 0.0 0.0 + x = 8.251666498 + 8.7 x = 8.251666498 + 8.7 Combine like terms: 8.251666498 + 8.7 = 16.951666498 x = 16.951666498 Simplifying x = 16.951666498

Subproblem 2

x + -8.7 = -8.251666498 Simplifying x + -8.7 = -8.251666498 Reorder the terms: -8.7 + x = -8.251666498 Solving -8.7 + x = -8.251666498 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8.7' to each side of the equation. -8.7 + 8.7 + x = -8.251666498 + 8.7 Combine like terms: -8.7 + 8.7 = 0.0 0.0 + x = -8.251666498 + 8.7 x = -8.251666498 + 8.7 Combine like terms: -8.251666498 + 8.7 = 0.448333502 x = 0.448333502 Simplifying x = 0.448333502

Solution

The solution to the problem is based on the solutions from the subproblems. x = {16.951666498, 0.448333502}

See similar equations:

| X^2-6=66 | | 5x+4=7x-7 | | 4z/10-5=2 | | -3xyz/-27x^2y^2z^2 | | 3x-144=0 | | 2x-12=2y+8 | | 180=48+x+x | | -3t^2+15t+13=0 | | 3x+10x-5=8-12+15x | | 3x+5x(2x-1)=8-3x(4-5x) | | 80=28+2w | | 80=28+x | | 1+2x=4x-7 | | x-12/x-4=3/5 | | y^2dx+(xy+x^2)=0 | | 2x+3x^2-4=12 | | 13x^2+26x+4=0 | | 1/2h×13 | | 7p+6=38 | | 135=0.1x+0.9x | | 135=0.1x | | 7x-3=10+1 | | x*(x+1)*(X+2)*(x+3)=0 | | 7x+6-8-0=6x-2 | | -2[3x+2(x-2)]+19=(3x+1)*2 | | 8x+30=3x+30 | | y=2x-5/10 | | 6x+28=15x-23 | | b^1/3b^1/3/-b^-1/3 | | 4pir^3/3 | | 7x+6-8=x | | y^2+6+9=0 |

Equations solver categories