3x^3-15X^2-42x=0

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Solution for 3x^3-15X^2-42x=0 equation:


Simplifying
3x3 + -15X2 + -42x = 0

Reorder the terms:
-15X2 + -42x + 3x3 = 0

Solving
-15X2 + -42x + 3x3 = 0

Solving for variable 'X'.

Move all terms containing X to the left, all other terms to the right.

Add '42x' to each side of the equation.
-15X2 + -42x + 42x + 3x3 = 0 + 42x

Combine like terms: -42x + 42x = 0
-15X2 + 0 + 3x3 = 0 + 42x
-15X2 + 3x3 = 0 + 42x
Remove the zero:
-15X2 + 3x3 = 42x

Add '-3x3' to each side of the equation.
-15X2 + 3x3 + -3x3 = 42x + -3x3

Combine like terms: 3x3 + -3x3 = 0
-15X2 + 0 = 42x + -3x3
-15X2 = 42x + -3x3

Divide each side by '-15'.
X2 = -2.8x + 0.2x3

Simplifying
X2 = -2.8x + 0.2x3

Reorder the terms:
X2 + 2.8x + -0.2x3 = -2.8x + 2.8x + 0.2x3 + -0.2x3

Combine like terms: -2.8x + 2.8x = 0.0
X2 + 2.8x + -0.2x3 = 0.0 + 0.2x3 + -0.2x3
X2 + 2.8x + -0.2x3 = 0.2x3 + -0.2x3

Combine like terms: 0.2x3 + -0.2x3 = 0.0
X2 + 2.8x + -0.2x3 = 0.0

The solution to this equation could not be determined.

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