3x^2+13x+30=0

Simple and best practice solution for 3x^2+13x+30=0 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+13x+30=0 equation:


Simplifying
3x2 + 13x + 30 = 0

Reorder the terms:
30 + 13x + 3x2 = 0

Solving
30 + 13x + 3x2 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
10 + 4.333333333x + x2 = 0

Move the constant term to the right:

Add '-10' to each side of the equation.
10 + 4.333333333x + -10 + x2 = 0 + -10

Reorder the terms:
10 + -10 + 4.333333333x + x2 = 0 + -10

Combine like terms: 10 + -10 = 0
0 + 4.333333333x + x2 = 0 + -10
4.333333333x + x2 = 0 + -10

Combine like terms: 0 + -10 = -10
4.333333333x + x2 = -10

The x term is 4.333333333x.  Take half its coefficient (2.166666667).
Square it (4.694444446) and add it to both sides.

Add '4.694444446' to each side of the equation.
4.333333333x + 4.694444446 + x2 = -10 + 4.694444446

Reorder the terms:
4.694444446 + 4.333333333x + x2 = -10 + 4.694444446

Combine like terms: -10 + 4.694444446 = -5.305555554
4.694444446 + 4.333333333x + x2 = -5.305555554

Factor a perfect square on the left side:
(x + 2.166666667)(x + 2.166666667) = -5.305555554

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 2ln(x)+ln(5)=3 | | 14x^2-28=98 | | -10-14v=-14v+5 | | -9-e=3e+11 | | 3(s-4)=4s-12 | | 9x^2-8=-71x | | 4=11-w | | -2x-1=-1 | | 5(d)+18=78 | | x^2+36=-15x | | 5c+2=2c+(-7) | | 10=-w+5 | | 3(2x+4)=7x+8 | | x^2-1x=42 | | 9x^2-8=-71 | | 2x+9=4x-36 | | 7x^2-14=49 | | d/9+5=15 | | 3+x-2=-15 | | 12-6x=36 | | 151-7x=20x+22 | | 8x^2+3x^2=176 | | -3=7+f/2 | | 0.7(8x+16)=1.3-(x+2) | | 3(5+m)=6 | | 2a+5/3a | | -2x-73=89 | | 5/a^2-1/2a | | -6(1+2v)-4=-106 | | 3y-27x=9 | | -6(-6+7m)+4m=-3m-34 | | -1+(-8)=x/5 |

Equations solver categories