3x^2+2x=-5

Simple and best practice solution for 3x^2+2x=-5 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 3x^2+2x=-5 equation:


Simplifying
3x2 + 2x = -5

Reorder the terms:
2x + 3x2 = -5

Solving
2x + 3x2 = -5

Solving for variable 'x'.

Reorder the terms:
5 + 2x + 3x2 = -5 + 5

Combine like terms: -5 + 5 = 0
5 + 2x + 3x2 = 0

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

Divide each side by '3'.
1.666666667 + 0.6666666667x + x2 = 0

Move the constant term to the right:

Add '-1.666666667' to each side of the equation.
1.666666667 + 0.6666666667x + -1.666666667 + x2 = 0 + -1.666666667

Reorder the terms:
1.666666667 + -1.666666667 + 0.6666666667x + x2 = 0 + -1.666666667

Combine like terms: 1.666666667 + -1.666666667 = 0.000000000
0.000000000 + 0.6666666667x + x2 = 0 + -1.666666667
0.6666666667x + x2 = 0 + -1.666666667

Combine like terms: 0 + -1.666666667 = -1.666666667
0.6666666667x + x2 = -1.666666667

The x term is 0.6666666667x.  Take half its coefficient (0.3333333334).
Square it (0.1111111112) and add it to both sides.

Add '0.1111111112' to each side of the equation.
0.6666666667x + 0.1111111112 + x2 = -1.666666667 + 0.1111111112

Reorder the terms:
0.1111111112 + 0.6666666667x + x2 = -1.666666667 + 0.1111111112

Combine like terms: -1.666666667 + 0.1111111112 = -1.5555555558
0.1111111112 + 0.6666666667x + x2 = -1.5555555558

Factor a perfect square on the left side:
(x + 0.3333333334)(x + 0.3333333334) = -1.5555555558

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 189=85-w | | 66=-3x-4x+3 | | 4s+38+8s+60=2(-3s+58) | | 4s+38+8s+60=-3s+58 | | -x+10-x=20 | | 51=-x+247 | | 9-23=3 | | -5x+10-x=46 | | 2m-1-m=5-4m | | 280-y=157 | | 180=90+58+6b+2 | | 5-22=3 | | 5x+5x+2x=180 | | 180=46+67+6n+1 | | t/5-9=6 | | 160n=180n-360 | | 12-6x/3= | | 156n=180n-360 | | 5n/8-6=4 | | 7z-z(4-3z)=35 | | y=35x+5 | | 2cos^2x-1=-cosx | | 12(v+3)-4v=4(2v+3)-17 | | s-10=20.26 | | 7y+5(y-7)=1 | | 144n=180n-360 | | 4x-20x=3x | | q+3=8 | | 5/2t=-1/5 | | n-6=-6+n | | 2x-4/2=21 | | -7=5(w+3)+6w |

Equations solver categories