(3x^4+9x^3-2)-(8x^2-2x+7)=

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Solution for (3x^4+9x^3-2)-(8x^2-2x+7)= equation: 


Simplifying
(3x4 + 9x3 + -2) + -1(8x2 + -2x + 7) = 0

Reorder the terms:
(-2 + 9x3 + 3x4) + -1(8x2 + -2x + 7) = 0

Remove parenthesis around (-2 + 9x3 + 3x4)
-2 + 9x3 + 3x4 + -1(8x2 + -2x + 7) = 0

Reorder the terms:
-2 + 9x3 + 3x4 + -1(7 + -2x + 8x2) = 0
-2 + 9x3 + 3x4 + (7 * -1 + -2x * -1 + 8x2 * -1) = 0
-2 + 9x3 + 3x4 + (-7 + 2x + -8x2) = 0

Reorder the terms:
-2 + -7 + 2x + -8x2 + 9x3 + 3x4 = 0

Combine like terms: -2 + -7 = -9
-9 + 2x + -8x2 + 9x3 + 3x4 = 0

Solving
-9 + 2x + -8x2 + 9x3 + 3x4 = 0

Solving for variable 'x'.

The solution to this equation could not be determined.

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