126=4x*x*(x+7)

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Solution for 126=4x*x*(x+7) equation: 


Simplifying
126 = 4x * x(x + 7)

Reorder the terms:
126 = 4x * x(7 + x)

Multiply x * x
126 = 4x2(7 + x)
126 = (7 * 4x2 + x * 4x2)
126 = (28x2 + 4x3)

Solving
126 = 28x2 + 4x3

Solving for variable 'x'.

Reorder the terms:
126 + -28x2 + -4x3 = 28x2 + -28x2 + 4x3 + -4x3

Combine like terms: 28x2 + -28x2 = 0
126 + -28x2 + -4x3 = 0 + 4x3 + -4x3
126 + -28x2 + -4x3 = 4x3 + -4x3

Combine like terms: 4x3 + -4x3 = 0
126 + -28x2 + -4x3 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(63 + -14x2 + -2x3) = 0

Ignore the factor 2.

Subproblem 1
Set the factor '(63 + -14x2 + -2x3)' equal to zero and attempt to solve:

Simplifying
63 + -14x2 + -2x3 = 0

Solving
63 + -14x2 + -2x3 = 0

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.

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