0=8x^4+2x^3-21x^2-7x+3

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Solution for 0=8x^4+2x^3-21x^2-7x+3 equation:


Simplifying
0 = 8x4 + 2x3 + -21x2 + -7x + 3

Reorder the terms:
0 = 3 + -7x + -21x2 + 2x3 + 8x4

Solving
0 = 3 + -7x + -21x2 + 2x3 + 8x4

Solving for variable 'x'.

Combine like terms: 0 + -3 = -3
-3 + 7x + 21x2 + -2x3 + -8x4 = 3 + -7x + -21x2 + 2x3 + 8x4 + -3 + 7x + 21x2 + -2x3 + -8x4

Reorder the terms:
-3 + 7x + 21x2 + -2x3 + -8x4 = 3 + -3 + -7x + 7x + -21x2 + 21x2 + 2x3 + -2x3 + 8x4 + -8x4

Combine like terms: 3 + -3 = 0
-3 + 7x + 21x2 + -2x3 + -8x4 = 0 + -7x + 7x + -21x2 + 21x2 + 2x3 + -2x3 + 8x4 + -8x4
-3 + 7x + 21x2 + -2x3 + -8x4 = -7x + 7x + -21x2 + 21x2 + 2x3 + -2x3 + 8x4 + -8x4

Combine like terms: -7x + 7x = 0
-3 + 7x + 21x2 + -2x3 + -8x4 = 0 + -21x2 + 21x2 + 2x3 + -2x3 + 8x4 + -8x4
-3 + 7x + 21x2 + -2x3 + -8x4 = -21x2 + 21x2 + 2x3 + -2x3 + 8x4 + -8x4

Combine like terms: -21x2 + 21x2 = 0
-3 + 7x + 21x2 + -2x3 + -8x4 = 0 + 2x3 + -2x3 + 8x4 + -8x4
-3 + 7x + 21x2 + -2x3 + -8x4 = 2x3 + -2x3 + 8x4 + -8x4

Combine like terms: 2x3 + -2x3 = 0
-3 + 7x + 21x2 + -2x3 + -8x4 = 0 + 8x4 + -8x4
-3 + 7x + 21x2 + -2x3 + -8x4 = 8x4 + -8x4

Combine like terms: 8x4 + -8x4 = 0
-3 + 7x + 21x2 + -2x3 + -8x4 = 0

The solution to this equation could not be determined.

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