15*x^2-5*x-120=0

Simple and best practice solution for 15*x^2-5*x-120=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 15*x^2-5*x-120=0 equation:


Simplifying
15x2 + -5x + -120 = 0

Reorder the terms:
-120 + -5x + 15x2 = 0

Solving
-120 + -5x + 15x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '5'.
5(-24 + -1x + 3x2) = 0

Factor a trinomial.
5((-8 + -3x)(3 + -1x)) = 0

Ignore the factor 5.

Subproblem 1

Set the factor '(-8 + -3x)' equal to zero and attempt to solve: Simplifying -8 + -3x = 0 Solving -8 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + -3x = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -3x = 0 + 8 -3x = 0 + 8 Combine like terms: 0 + 8 = 8 -3x = 8 Divide each side by '-3'. x = -2.666666667 Simplifying x = -2.666666667

Subproblem 2

Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

Solution

x = {-2.666666667, 3}

See similar equations:

| P(x)=8-1600 | | 25a^2-20p+4= | | 5s-4=-1+6s | | x=5cosy | | 5n^2=-9n-4 | | 3/4-5/3 | | 2n-2=1+m | | 4ln(4x+6)=16 | | 2x+12=(-24) | | 720=375+34.50x | | X-12=-43 | | 1/2x-6=2 | | 13(v-6)=5v+2(5v+12) | | 4(1-5x)+8=-16 | | 4x^2+y^2-40x-8y+100=0 | | -3x-11x=-98 | | 2/3x-1=37 | | 6/10=k-3/k | | 2(x-40)+2x=-6x-2 | | A=5000(l+8*4) | | x^2+y^2+144=0 | | (71/((7-6x)^2))=0 | | 6x-33=-103 | | 3x+.6x=183.375 | | 6/9=a/5 | | -10.8-6.4= | | 2/9=-n/3 | | 4x^2+y^2+32x-48=0 | | -(3v-8)=28+9v | | -6.4-10.8= | | 0.0357x=357 | | 2(7r-4)=40+6r |

Equations solver categories