2x^2-3=-6x-2

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


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

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

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

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

Solving for variable 'x'.

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

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

Reorder the terms:
-1 + 6x + 2x2 = -2 + 2 + -6x + 6x

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

Combine like terms: -6x + 6x = 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 = 2.75
2.25 + 3x + x2 = 2.75

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = 2.75

Calculate the square root of the right side: 1.658312395

Break this problem into two subproblems by setting 
(x + 1.5) equal to 1.658312395 and -1.658312395.

Subproblem 1

x + 1.5 = 1.658312395 Simplifying x + 1.5 = 1.658312395 Reorder the terms: 1.5 + x = 1.658312395 Solving 1.5 + x = 1.658312395 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 = 1.658312395 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 1.658312395 + -1.5 x = 1.658312395 + -1.5 Combine like terms: 1.658312395 + -1.5 = 0.158312395 x = 0.158312395 Simplifying x = 0.158312395

Subproblem 2

x + 1.5 = -1.658312395 Simplifying x + 1.5 = -1.658312395 Reorder the terms: 1.5 + x = -1.658312395 Solving 1.5 + x = -1.658312395 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 = -1.658312395 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -1.658312395 + -1.5 x = -1.658312395 + -1.5 Combine like terms: -1.658312395 + -1.5 = -3.158312395 x = -3.158312395 Simplifying x = -3.158312395

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.158312395, -3.158312395}

See similar equations:

| x^2+8x+10=3 | | x^2-3x+27=8x-3 | | 24x^2-20-16= | | x^2+4x-9=x+1 | | 4x(x^2-3x)=2x(4x-8)-9x | | h(x)=7(x^2)-1 | | h(x)=7x^2-1 | | 3y^2-6y+15=0 | | X^5+4x^4-8x^3-14x^2+7x+10=0 | | x^4-6x^2+x-1= | | X^2-4=0 | | =4n^3-2n^2+2n | | =3x^2-11x-4 | | y=x^2-6x-1 | | x^2+14x=-9 | | y=8x^2-11x+18 | | x^4+x^3+10x^2+16x-96=0 | | 13x^2-18x=0 | | y=4x^3 | | 2c^2-c-15= | | 5x^2=6x+10 | | y=x^3+9x^2-6x-56 | | x^2+3x-10=10 | | x^2+6x+8=3 | | 2x^2-3=4x-1 | | x^3-x^2-4=0 | | 2x^3-7x^2+8x-3=0 | | y=-2x^2+5 | | 9x^2-5x-3=0 | | X^2=-5x+1 | | 6x^3-216x=0 | | 15x^2-17x=8 |

Equations solver categories