x^2+3x=8x+3

Simple and best practice solution for x^2+3x=8x+3 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^2+3x=8x+3 equation:


Simplifying
x2 + 3x = 8x + 3

Reorder the terms:
3x + x2 = 8x + 3

Reorder the terms:
3x + x2 = 3 + 8x

Solving
3x + x2 = 3 + 8x

Solving for variable 'x'.

Reorder the terms:
-3 + 3x + -8x + x2 = 3 + 8x + -3 + -8x

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

Reorder the terms:
-3 + -5x + x2 = 3 + -3 + 8x + -8x

Combine like terms: 3 + -3 = 0
-3 + -5x + x2 = 0 + 8x + -8x
-3 + -5x + x2 = 8x + -8x

Combine like terms: 8x + -8x = 0
-3 + -5x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + -5x + 3 + x2 = 0 + 3

Reorder the terms:
-3 + 3 + -5x + x2 = 0 + 3

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

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

The x term is -5x.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5x + 6.25 + x2 = 3 + 6.25

Reorder the terms:
6.25 + -5x + x2 = 3 + 6.25

Combine like terms: 3 + 6.25 = 9.25
6.25 + -5x + x2 = 9.25

Factor a perfect square on the left side:
(x + -2.5)(x + -2.5) = 9.25

Calculate the square root of the right side: 3.041381265

Break this problem into two subproblems by setting 
(x + -2.5) equal to 3.041381265 and -3.041381265.

Subproblem 1

x + -2.5 = 3.041381265 Simplifying x + -2.5 = 3.041381265 Reorder the terms: -2.5 + x = 3.041381265 Solving -2.5 + x = 3.041381265 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = 3.041381265 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = 3.041381265 + 2.5 x = 3.041381265 + 2.5 Combine like terms: 3.041381265 + 2.5 = 5.541381265 x = 5.541381265 Simplifying x = 5.541381265

Subproblem 2

x + -2.5 = -3.041381265 Simplifying x + -2.5 = -3.041381265 Reorder the terms: -2.5 + x = -3.041381265 Solving -2.5 + x = -3.041381265 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = -3.041381265 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = -3.041381265 + 2.5 x = -3.041381265 + 2.5 Combine like terms: -3.041381265 + 2.5 = -0.541381265 x = -0.541381265 Simplifying x = -0.541381265

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.541381265, -0.541381265}

See similar equations:

| 35x+27=58 | | z^2-14z+24=0 | | (x^2+5x-4)(x+8)= | | 6x+8=80-x | | 5x-3=50x-53 | | (5p^2-3p-8)(8p-3)= | | -5+4(1-3b)=30 | | 9x+47=84-x | | 18=-8r+6r | | 8k+4+2=-15 | | 2x=1(x-4) | | 2p^2-18p+23=0 | | X+9y=-3 | | 6(n-11)=12+2(2n-3) | | X+2+x=116 | | 8x=135 | | -(8-4)=9 | | 2(3x+4)=3x+1 | | a+(a+3)+(b*3)=2 | | 3x-5x=-6 | | 21-3n=2x+-3 | | 3(4x+5)=100 | | x^2+4(x+5)=400 | | Cos(2x)=-.5 | | 10y+3=6+12 | | 21=3x-21 | | 27=3x-12 | | 4t-7=10 | | x-2y=85 | | 8(5-4)+10=38 | | x-25=100 | | |3x+2|=7 |

Equations solver categories