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

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


Simplifying
(7x3 + -9x2 + 4) + -1(2x3 + -7x + -8) = 0

Reorder the terms:
(4 + -9x2 + 7x3) + -1(2x3 + -7x + -8) = 0

Remove parenthesis around (4 + -9x2 + 7x3)
4 + -9x2 + 7x3 + -1(2x3 + -7x + -8) = 0

Reorder the terms:
4 + -9x2 + 7x3 + -1(-8 + -7x + 2x3) = 0
4 + -9x2 + 7x3 + (-8 * -1 + -7x * -1 + 2x3 * -1) = 0
4 + -9x2 + 7x3 + (8 + 7x + -2x3) = 0

Reorder the terms:
4 + 8 + 7x + -9x2 + 7x3 + -2x3 = 0

Combine like terms: 4 + 8 = 12
12 + 7x + -9x2 + 7x3 + -2x3 = 0

Combine like terms: 7x3 + -2x3 = 5x3
12 + 7x + -9x2 + 5x3 = 0

Solving
12 + 7x + -9x2 + 5x3 = 0

Solving for variable 'x'.

The solution to this equation could not be determined.

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