3x^2-12x+39=

Simple and best practice solution for 3x^2-12x+39= 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^2-12x+39= equation:


Simplifying
3x2 + -12x + 39 = 0

Reorder the terms:
39 + -12x + 3x2 = 0

Solving
39 + -12x + 3x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '3'.
3(13 + -4x + x2) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(13 + -4x + x2)' equal to zero and attempt to solve: Simplifying 13 + -4x + x2 = 0 Solving 13 + -4x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-13' to each side of the equation. 13 + -4x + -13 + x2 = 0 + -13 Reorder the terms: 13 + -13 + -4x + x2 = 0 + -13 Combine like terms: 13 + -13 = 0 0 + -4x + x2 = 0 + -13 -4x + x2 = 0 + -13 Combine like terms: 0 + -13 = -13 -4x + x2 = -13 The x term is -4x. Take half its coefficient (-2). Square it (4) and add it to both sides. Add '4' to each side of the equation. -4x + 4 + x2 = -13 + 4 Reorder the terms: 4 + -4x + x2 = -13 + 4 Combine like terms: -13 + 4 = -9 4 + -4x + x2 = -9 Factor a perfect square on the left side: (x + -2)(x + -2) = -9 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:

| 11x+2y=812 | | K+k+k+k+k= | | B+17= | | 7+x5= | | 2x^2-6x-20= | | 10x^2=3x | | -2x+5+6x-8= | | 8h^2-18hj-5j^2=0 | | 4x^2+20x=-29 | | 6L=.8L^2 | | -20z^2+7z+3=0 | | 3(x+1)=8(x-1)+5 | | 15d^2+33d-36=0 | | 6(p-3)-3(4-3p)=25+4p | | 15m^2+23m+4=0 | | 4x^2+17x=-4 | | -d+16=20 | | 13x^2-(10x^2+9)=0 | | -d+17=9 | | 24v=5v^2-5 | | 3u^2=-7u-2 | | 49b^2-9=0 | | (3x^2-15d)-(-10x^2-4d)=0 | | 4x^2-9x^2-36x-14= | | 2x-28=-58+7x | | 16c^2+40c+25=0 | | 2x-28=-28+7x | | 0.16c^2+0.40c+.25=0 | | -10w^7-(-14w^7-5n)=0 | | 5n-18=-18+n | | 9a^2-24a+16=0 | | -13.6+(-3.4c)+1.7c=3.4 |

Equations solver categories