3x^2+18x+39=0

Simple and best practice solution for 3x^2+18x+39=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+18x+39=0 equation:


Simplifying
3x2 + 18x + 39 = 0

Reorder the terms:
39 + 18x + 3x2 = 0

Solving
39 + 18x + 3x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '3'.
3(13 + 6x + x2) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(13 + 6x + x2)' equal to zero and attempt to solve: Simplifying 13 + 6x + x2 = 0 Solving 13 + 6x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-13' to each side of the equation. 13 + 6x + -13 + x2 = 0 + -13 Reorder the terms: 13 + -13 + 6x + x2 = 0 + -13 Combine like terms: 13 + -13 = 0 0 + 6x + x2 = 0 + -13 6x + x2 = 0 + -13 Combine like terms: 0 + -13 = -13 6x + x2 = -13 The x term is 6x. Take half its coefficient (3). Square it (9) and add it to both sides. Add '9' to each side of the equation. 6x + 9 + x2 = -13 + 9 Reorder the terms: 9 + 6x + x2 = -13 + 9 Combine like terms: -13 + 9 = -4 9 + 6x + x2 = -4 Factor a perfect square on the left side: (x + 3)(x + 3) = -4 Can't calculate square root of the right side. The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

See similar equations:

| 4(x-4)=-2(x-16) | | 4(x-1)=2(x-26) | | 5x^2+4=3x^2+36 | | -18=3(-z+6+2z) | | 7=5x+3x-2+5 | | ((2x-1)/3)+((3x+4)/4)=(7(x-3))/10 | | B=y+3 | | 3x-17=5x+2 | | (5x-4)=-16 | | a/3+8=13 | | 4(3r+2)-3r=-1 | | 98=27x+4.9x^2 | | 35=-5(k+5) | | 0.2x^2-0.4X-2.1=0 | | (-8-5)(-2+1)=39 | | 0.5x^2+11X+3.5=0 | | 5g-8=g | | 3(2w+1)=15 | | 3(2w+1)=27 | | 2(2r-1)=5 | | 3(p+2)=3 | | 6(3g-7)=12 | | 2(p-2)=9 | | Z^4-4z^2-16z-16=0 | | 2cos^3(x)-7cos^2(x)+3cos(x)=0 | | 4d-8=42 | | 2e=14 | | 28+x=42 | | K-2=3 | | 6x-13x^1/2+2 | | 5(2y-3)/3y=3 | | 4+36=14x-54 |

Equations solver categories