4x(10x^3-5x-7)=21

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Solution for 4x(10x^3-5x-7)=21 equation: 


Simplifying
4x(10x3 + -5x + -7) = 21

Reorder the terms:
4x(-7 + -5x + 10x3) = 21
(-7 * 4x + -5x * 4x + 10x3 * 4x) = 21
(-28x + -20x2 + 40x4) = 21

Solving
-28x + -20x2 + 40x4 = 21

Solving for variable 'x'.

Reorder the terms:
-21 + -28x + -20x2 + 40x4 = 21 + -21

Combine like terms: 21 + -21 = 0
-21 + -28x + -20x2 + 40x4 = 0

The solution to this equation could not be determined.

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