X[4]-15x[2]-16=0

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Solution for X[4]-15x[2]-16=0 equation:


Simplifying
X[4] + -15x[2] + -16 = 0

Reorder the terms for easier multiplication:
4X + -15x[2] + -16 = 0

Reorder the terms for easier multiplication:
4X + -15 * 2x + -16 = 0

Multiply -15 * 2
4X + -30x + -16 = 0

Reorder the terms:
-16 + 4X + -30x = 0

Solving
-16 + 4X + -30x = 0

Solving for variable 'X'.

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

Add '16' to each side of the equation.
-16 + 4X + 16 + -30x = 0 + 16

Reorder the terms:
-16 + 16 + 4X + -30x = 0 + 16

Combine like terms: -16 + 16 = 0
0 + 4X + -30x = 0 + 16
4X + -30x = 0 + 16

Combine like terms: 0 + 16 = 16
4X + -30x = 16

Add '30x' to each side of the equation.
4X + -30x + 30x = 16 + 30x

Combine like terms: -30x + 30x = 0
4X + 0 = 16 + 30x
4X = 16 + 30x

Divide each side by '4'.
X = 4 + 7.5x

Simplifying
X = 4 + 7.5x

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