2X^3-8X^2-42X=0

Simple and best practice solution for 2X^3-8X^2-42X=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 2X^3-8X^2-42X=0 equation:


Simplifying
2X3 + -8X2 + -42X = 0

Reorder the terms:
-42X + -8X2 + 2X3 = 0

Solving
-42X + -8X2 + 2X3 = 0

Solving for variable 'X'.

Factor out the Greatest Common Factor (GCF), '2X'.
2X(-21 + -4X + X2) = 0

Factor a trinomial.
2X((-3 + -1X)(7 + -1X)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor 'X' equal to zero and attempt to solve: Simplifying X = 0 Solving X = 0 Move all terms containing X to the left, all other terms to the right. Simplifying X = 0

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

Subproblem 3

Set the factor '(7 + -1X)' equal to zero and attempt to solve: Simplifying 7 + -1X = 0 Solving 7 + -1X = 0 Move all terms containing X to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1X = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1X = 0 + -7 -1X = 0 + -7 Combine like terms: 0 + -7 = -7 -1X = -7 Divide each side by '-1'. X = 7 Simplifying X = 7

Solution

X = {0, -3, 7}

See similar equations:

| 9-(7x-4)=8 | | 8-(4x-2)=6 | | ln(x+1)=ln(6x-5) | | 3h+7=6+2(h+2) | | 1.2(2n+6)=5n-12-n | | N+2=-14-h | | 8-(4x-3)=5 | | 3(2x+6)=5n-12-n | | 9-(2x+5)=2 | | z+4z-22=7z | | 15x^2-14x-8=0 | | 5z=3z+36 | | 8+26=74 | | 3z+16=5z | | 9n+12=30 | | 8x-3=-6x | | 5d-6=24 | | 3(4x+5)-7x=x | | Y-4+6y=3-8y | | 5x^3+40x^2+5x+40=0 | | 8z+3(5-z)=10 | | 8n-7=33 | | 9t=81d(10) | | 2x+3-8x+2=-12x-1 | | -y+7-6y=19-3y | | 6a-7=53 | | -3i(7i-5)= | | 2(z+4)= | | b=400-10(-10) | | 5n+11=46 | | 5-2x=-4x+13 | | 9b+15=60 |

Equations solver categories