2x^2+6x+3=2

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


Simplifying
2x2 + 6x + 3 = 2

Reorder the terms:
3 + 6x + 2x2 = 2

Solving
3 + 6x + 2x2 = 2

Solving for variable 'x'.

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

Combine like terms: 3 + -2 = 1
1 + 6x + 2x2 = 2 + -2

Combine like terms: 2 + -2 = 0
1 + 6x + 2x2 = 0

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

Divide each side by '2'.
0.5 + 3x + x2 = 0

Move the constant term to the right:

Add '-0.5' to each side of the equation.
0.5 + 3x + -0.5 + x2 = 0 + -0.5

Reorder the terms:
0.5 + -0.5 + 3x + x2 = 0 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + 3x + x2 = 0 + -0.5
3x + x2 = 0 + -0.5

Combine like terms: 0 + -0.5 = -0.5
3x + x2 = -0.5

The x term is 3x.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3x + 2.25 + x2 = -0.5 + 2.25

Reorder the terms:
2.25 + 3x + x2 = -0.5 + 2.25

Combine like terms: -0.5 + 2.25 = 1.75
2.25 + 3x + x2 = 1.75

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = 1.75

Calculate the square root of the right side: 1.322875656

Break this problem into two subproblems by setting 
(x + 1.5) equal to 1.322875656 and -1.322875656.

Subproblem 1

x + 1.5 = 1.322875656 Simplifying x + 1.5 = 1.322875656 Reorder the terms: 1.5 + x = 1.322875656 Solving 1.5 + x = 1.322875656 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = 1.322875656 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 1.322875656 + -1.5 x = 1.322875656 + -1.5 Combine like terms: 1.322875656 + -1.5 = -0.177124344 x = -0.177124344 Simplifying x = -0.177124344

Subproblem 2

x + 1.5 = -1.322875656 Simplifying x + 1.5 = -1.322875656 Reorder the terms: 1.5 + x = -1.322875656 Solving 1.5 + x = -1.322875656 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = -1.322875656 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -1.322875656 + -1.5 x = -1.322875656 + -1.5 Combine like terms: -1.322875656 + -1.5 = -2.822875656 x = -2.822875656 Simplifying x = -2.822875656

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.177124344, -2.822875656}

See similar equations:

| 24=-3(2x-10) | | 6x^3-4x^2+2x= | | 2+1=5 | | 6x-4=-1 | | 4y^2+11y+6=0 | | 6x-4=x | | 21+x=6-2x | | 83.3=6.3+14 | | -6x+26x=-340 | | 2z^2-11z+15=0 | | 4k+12k-20=240 | | 3x^2-77x+18=0 | | -82=53+5x | | x^2=100x | | -3x+8-2x-4=29 | | 19+8x=43 | | (12.1+a)/4.9=7.071 | | (x-4)-3=21 | | 7x+y=4whatisy | | 3x^2-5x-16=0 | | 12.1+a/4.9=7.071 | | 2x-35=33 | | 30x+36x=209 | | 4a^2-15=0 | | 3(x+2)+5=x+12 | | 2(3x+7)=-46 | | x+1=7x-2 | | 8x+2x(4)=560 | | v^2-3uv-108v^2=0 | | x+1=7x-2y | | 3(3-2n)=-7n+1 | | -10.5+m/11.57=-2.748 |

Equations solver categories