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

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


Simplifying
-2x2 + -1x = -3x2 + -6x + -3

Reorder the terms:
-1x + -2x2 = -3x2 + -6x + -3

Reorder the terms:
-1x + -2x2 = -3 + -6x + -3x2

Solving
-1x + -2x2 = -3 + -6x + -3x2

Solving for variable 'x'.

Reorder the terms:
3 + -1x + 6x + -2x2 + 3x2 = -3 + -6x + -3x2 + 3 + 6x + 3x2

Combine like terms: -1x + 6x = 5x
3 + 5x + -2x2 + 3x2 = -3 + -6x + -3x2 + 3 + 6x + 3x2

Combine like terms: -2x2 + 3x2 = 1x2
3 + 5x + 1x2 = -3 + -6x + -3x2 + 3 + 6x + 3x2

Reorder the terms:
3 + 5x + 1x2 = -3 + 3 + -6x + 6x + -3x2 + 3x2

Combine like terms: -3 + 3 = 0
3 + 5x + 1x2 = 0 + -6x + 6x + -3x2 + 3x2
3 + 5x + 1x2 = -6x + 6x + -3x2 + 3x2

Combine like terms: -6x + 6x = 0
3 + 5x + 1x2 = 0 + -3x2 + 3x2
3 + 5x + 1x2 = -3x2 + 3x2

Combine like terms: -3x2 + 3x2 = 0
3 + 5x + 1x2 = 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 = 3.25
6.25 + 5x + x2 = 3.25

Factor a perfect square on the left side:
(x + 2.5)(x + 2.5) = 3.25

Calculate the square root of the right side: 1.802775638

Break this problem into two subproblems by setting 
(x + 2.5) equal to 1.802775638 and -1.802775638.

Subproblem 1

x + 2.5 = 1.802775638 Simplifying x + 2.5 = 1.802775638 Reorder the terms: 2.5 + x = 1.802775638 Solving 2.5 + x = 1.802775638 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 = 1.802775638 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = 1.802775638 + -2.5 x = 1.802775638 + -2.5 Combine like terms: 1.802775638 + -2.5 = -0.697224362 x = -0.697224362 Simplifying x = -0.697224362

Subproblem 2

x + 2.5 = -1.802775638 Simplifying x + 2.5 = -1.802775638 Reorder the terms: 2.5 + x = -1.802775638 Solving 2.5 + x = -1.802775638 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 = -1.802775638 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = -1.802775638 + -2.5 x = -1.802775638 + -2.5 Combine like terms: -1.802775638 + -2.5 = -4.302775638 x = -4.302775638 Simplifying x = -4.302775638

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.697224362, -4.302775638}

See similar equations:

| 2x+35+4x-10+3x-7=180 | | (6x+2)=5 | | 2*p+6+4=-4*p | | 9x-6y=-7 | | 5a+3b=40 | | 50x-.5x^2=4x+10 | | 2*x+24=9*x+18 | | 23y=-16 | | 5x=.50-12 | | 13+11y+9x= | | 6*m+2*m+14=m-14 | | log(x^2-9)=log(x+11) | | 5x=12-.50 | | 7*x+5=16*x | | (1/8)(-7/8x^(-15/8)) | | 12x=5-.50 | | 12x=5-.50x | | 36x+18=13 | | -9+4y=6 | | 7(5x+9)+2(9x-3)=-30 | | 36x-18=13 | | 3*m-2*m-14=m+14 | | 7(5x+9)+2(9x-3)=030 | | 5-12=-.50x | | 0.4m=5 | | (8)/(4X)*8Y | | 3m-2m-14=3+14 | | 25p-32=68 | | -12+5=-.50 | | 14g-27=1 | | -28=2x-20 | | 12-5=.50x |

Equations solver categories