3x^2+5x+64=0

Simple and best practice solution for 3x^2+5x+64=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+5x+64=0 equation:


Simplifying
3x2 + 5x + 64 = 0

Reorder the terms:
64 + 5x + 3x2 = 0

Solving
64 + 5x + 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'.
21.33333333 + 1.666666667x + x2 = 0

Move the constant term to the right:

Add '-21.33333333' to each side of the equation.
21.33333333 + 1.666666667x + -21.33333333 + x2 = 0 + -21.33333333

Reorder the terms:
21.33333333 + -21.33333333 + 1.666666667x + x2 = 0 + -21.33333333

Combine like terms: 21.33333333 + -21.33333333 = 0.00000000
0.00000000 + 1.666666667x + x2 = 0 + -21.33333333
1.666666667x + x2 = 0 + -21.33333333

Combine like terms: 0 + -21.33333333 = -21.33333333
1.666666667x + x2 = -21.33333333

The x term is 1.666666667x.  Take half its coefficient (0.8333333335).
Square it (0.6944444447) and add it to both sides.

Add '0.6944444447' to each side of the equation.
1.666666667x + 0.6944444447 + x2 = -21.33333333 + 0.6944444447

Reorder the terms:
0.6944444447 + 1.666666667x + x2 = -21.33333333 + 0.6944444447

Combine like terms: -21.33333333 + 0.6944444447 = -20.6388888853
0.6944444447 + 1.666666667x + x2 = -20.6388888853

Factor a perfect square on the left side:
(x + 0.8333333335)(x + 0.8333333335) = -20.6388888853

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 4a^2-20x+25=0 | | 40x-4=10 | | 10=-4x | | 12x^2-61x+60=0 | | 2/3-5/9=4 | | 33x(x+5)=9900 | | 0.15(4-X)=0.13(2-X) | | w^2-2w-8(w-2)=0 | | 0.5x-0.3=1.1+0.3x | | 7x^9-14x^7=0 | | -2(5x-1)-x=-4(x-3) | | 5x-4=26+2x | | -16(1-x)-14x=-10 | | 5x-12=x | | -60/5=x | | 5A=55 | | 3x+1=4x-3 | | 1+3x=3-4x | | 15x^2-40x+75=0 | | 45x^2-102x+225=0 | | 15x^2-34x+75=0 | | 7(2t+4)=4(7-2t) | | x+x+y+y= | | (x+7)(3x+4)=14 | | 5(2x-2)=10(x-1) | | (x+1)(x+4)=14 | | -2(2s-6)-12=2(9s+9)-3 | | -12x+36=0 | | (5x-2)+3x=59 | | 20m^2-9m-20= | | s^2-6s=2s+20 | | 6x^2-11x-4=0 |

Equations solver categories