x=(-2*x*x-3)

Simple and best practice solution for x=(-2*x*x-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*x*x-3) equation:


Simplifying
x = (-2x * x + -3)

Multiply x * x
x = (-2x2 + -3)

Reorder the terms:
x = (-3 + -2x2)

Remove parenthesis around (-3 + -2x2)
x = -3 + -2x2

Solving
x = -3 + -2x2

Solving for variable 'x'.

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

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

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

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

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

Divide each side by '2'.
1.5 + 0.5x + x2 = 0

Move the constant term to the right:

Add '-1.5' to each side of the equation.
1.5 + 0.5x + -1.5 + x2 = 0 + -1.5

Reorder the terms:
1.5 + -1.5 + 0.5x + x2 = 0 + -1.5

Combine like terms: 1.5 + -1.5 = 0.0
0.0 + 0.5x + x2 = 0 + -1.5
0.5x + x2 = 0 + -1.5

Combine like terms: 0 + -1.5 = -1.5
0.5x + x2 = -1.5

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
0.5x + 0.25 + x2 = -1.5 + 0.25

Reorder the terms:
0.25 + 0.5x + x2 = -1.5 + 0.25

Combine like terms: -1.5 + 0.25 = -1.25
0.25 + 0.5x + x2 = -1.25

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = -1.25

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 9x^2+5=45 | | 9x^2+5=5 | | n+30=-6 | | 4+n=1 | | y+-13=0 | | b+-8=5 | | p+2=-20 | | c+12=20 | | n+16=-42 | | f+-5=12 | | 9-2x=x^2+6x+9 | | 4ln(x-2)=-8 | | a+-8=-3 | | 9X/7-6x=5 | | x+5y=230 | | 8-10=x | | X+-7=3 | | 2(x+3)+4x+54= | | 2x+3+54= | | 9/5=12/3x+2 | | f(x)=3x-84x+20 | | 88/58= | | 5r+15/10=4r-4/4 | | x-4/5-1/5y=0 | | -2x=-4-y | | 2w^2+19w+46=w^2+36 | | -5x-3y=-16 | | -7x-2y=-7 | | 7x+2(-1-8x)=-18+7x | | -11(x+11)=5x-25 | | 3/7*2 | | 3/7(2)+5/8 |

Equations solver categories