3x^2+5x+6=3x+8-2x^2

Simple and best practice solution for 3x^2+5x+6=3x+8-2x^2 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 3x^2+5x+6=3x+8-2x^2 equation:


Simplifying
3x2 + 5x + 6 = 3x + 8 + -2x2

Reorder the terms:
6 + 5x + 3x2 = 3x + 8 + -2x2

Reorder the terms:
6 + 5x + 3x2 = 8 + 3x + -2x2

Solving
6 + 5x + 3x2 = 8 + 3x + -2x2

Solving for variable 'x'.

Reorder the terms:
6 + -8 + 5x + -3x + 3x2 + 2x2 = 8 + 3x + -2x2 + -8 + -3x + 2x2

Combine like terms: 6 + -8 = -2
-2 + 5x + -3x + 3x2 + 2x2 = 8 + 3x + -2x2 + -8 + -3x + 2x2

Combine like terms: 5x + -3x = 2x
-2 + 2x + 3x2 + 2x2 = 8 + 3x + -2x2 + -8 + -3x + 2x2

Combine like terms: 3x2 + 2x2 = 5x2
-2 + 2x + 5x2 = 8 + 3x + -2x2 + -8 + -3x + 2x2

Reorder the terms:
-2 + 2x + 5x2 = 8 + -8 + 3x + -3x + -2x2 + 2x2

Combine like terms: 8 + -8 = 0
-2 + 2x + 5x2 = 0 + 3x + -3x + -2x2 + 2x2
-2 + 2x + 5x2 = 3x + -3x + -2x2 + 2x2

Combine like terms: 3x + -3x = 0
-2 + 2x + 5x2 = 0 + -2x2 + 2x2
-2 + 2x + 5x2 = -2x2 + 2x2

Combine like terms: -2x2 + 2x2 = 0
-2 + 2x + 5x2 = 0

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

Divide each side by '5'.
-0.4 + 0.4x + x2 = 0

Move the constant term to the right:

Add '0.4' to each side of the equation.
-0.4 + 0.4x + 0.4 + x2 = 0 + 0.4

Reorder the terms:
-0.4 + 0.4 + 0.4x + x2 = 0 + 0.4

Combine like terms: -0.4 + 0.4 = 0.0
0.0 + 0.4x + x2 = 0 + 0.4
0.4x + x2 = 0 + 0.4

Combine like terms: 0 + 0.4 = 0.4
0.4x + x2 = 0.4

The x term is 0.4x.  Take half its coefficient (0.2).
Square it (0.04) and add it to both sides.

Add '0.04' to each side of the equation.
0.4x + 0.04 + x2 = 0.4 + 0.04

Reorder the terms:
0.04 + 0.4x + x2 = 0.4 + 0.04

Combine like terms: 0.4 + 0.04 = 0.44
0.04 + 0.4x + x2 = 0.44

Factor a perfect square on the left side:
(x + 0.2)(x + 0.2) = 0.44

Calculate the square root of the right side: 0.663324958

Break this problem into two subproblems by setting 
(x + 0.2) equal to 0.663324958 and -0.663324958.

Subproblem 1

x + 0.2 = 0.663324958 Simplifying x + 0.2 = 0.663324958 Reorder the terms: 0.2 + x = 0.663324958 Solving 0.2 + x = 0.663324958 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2' to each side of the equation. 0.2 + -0.2 + x = 0.663324958 + -0.2 Combine like terms: 0.2 + -0.2 = 0.0 0.0 + x = 0.663324958 + -0.2 x = 0.663324958 + -0.2 Combine like terms: 0.663324958 + -0.2 = 0.463324958 x = 0.463324958 Simplifying x = 0.463324958

Subproblem 2

x + 0.2 = -0.663324958 Simplifying x + 0.2 = -0.663324958 Reorder the terms: 0.2 + x = -0.663324958 Solving 0.2 + x = -0.663324958 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2' to each side of the equation. 0.2 + -0.2 + x = -0.663324958 + -0.2 Combine like terms: 0.2 + -0.2 = 0.0 0.0 + x = -0.663324958 + -0.2 x = -0.663324958 + -0.2 Combine like terms: -0.663324958 + -0.2 = -0.863324958 x = -0.863324958 Simplifying x = -0.863324958

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.463324958, -0.863324958}

See similar equations:

| 8p^2-6p+9=0 | | -7(x+-6)=-6(x+-5)+1 | | 180-(90+3x-5)=4x-3 | | -1(-v+3)=3(v+7) | | 6(8x)=115 | | 16=14(x+1) | | 1.08=5n | | x-5/2=1 | | 1.08x=5n | | 1(y+4)=2(y+-8)+-10 | | -0.5x+x=60 | | 2(x-8)2/3=16 | | 0=x/2-5 | | 8(-2n+6)+7n=-3(n-8) | | k^2+11k=-28 | | 5t-4=21-1 | | 5/100=58000 | | X=4-1x | | d-4=4 | | 24x^5y^5= | | 0.6m+4.5=82.5 | | b^2-2b-5=-2 | | 4-3x=47 | | 11+4x=35 | | Z=-ln(2t-3)+2 | | n^2-2n-20=-5 | | 0.25x+0.10y=3.35 | | 24x^5y^5/30x^7y^-4 | | 2y=72x | | 3(4m-5)= | | -12=3x-8 | | -5(y+-4)=-4(y+-7)+8 |

Equations solver categories