2x^2+3=-4x

Simple and best practice solution for 2x^2+3=-4x 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=-4x equation:


Simplifying
2x2 + 3 = -4x

Reorder the terms:
3 + 2x2 = -4x

Solving
3 + 2x2 = -4x

Solving for variable 'x'.

Reorder the terms:
3 + 4x + 2x2 = -4x + 4x

Combine like terms: -4x + 4x = 0
3 + 4x + 2x2 = 0

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

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

Move the constant term to the right:

Add '-1.5' to each side of the equation.
1.5 + 2x + -1.5 + x2 = 0 + -1.5

Reorder the terms:
1.5 + -1.5 + 2x + x2 = 0 + -1.5

Combine like terms: 1.5 + -1.5 = 0.0
0.0 + 2x + x2 = 0 + -1.5
2x + x2 = 0 + -1.5

Combine like terms: 0 + -1.5 = -1.5
2x + x2 = -1.5

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = -1.5 + 1

Reorder the terms:
1 + 2x + x2 = -1.5 + 1

Combine like terms: -1.5 + 1 = -0.5
1 + 2x + x2 = -0.5

Factor a perfect square on the left side:
(x + 1)(x + 1) = -0.5

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 0.2(30-10x)=0.6(4x+2) | | 6(p-1)=3p | | -4x+15=11 | | 7x-5=7x+5 | | -4x+7=-1 | | z^2+12x+31=0 | | 5x^2=36x+32 | | 6(4z-1)-4(z+2)=17(z+1) | | 4y+y=6 | | c+5= | | .00000000000112=4x^3+5.6x^2 | | (x-1)(x+2)= | | (x+4)(x+1)= | | 15x+12y=0 | | 8=D | | 2x/5=-3+7 | | 4z^2+32z+63=0 | | 9n+72= | | 14y^2-15y+4=0 | | 3h=2h-8 | | 6(a+2)= | | 0.28x-0.75x=-13 | | 49s^2-9=0 | | x^2-16x+66=0 | | 1.5x+0.6x=13 | | 7.2x-3.7=17.9 | | 287-7x=38x+22 | | 3r^2+2r-21= | | 0.5x-0.2x=3 | | 4y=7 | | 18x-9+3z=18 | | 6-(x-5)=2 |

Equations solver categories