(5x^4+3x^3-9)-(4x^2-7x+4)=

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Solution for (5x^4+3x^3-9)-(4x^2-7x+4)= equation: 


Simplifying
(5x4 + 3x3 + -9) + -1(4x2 + -7x + 4) = 0

Reorder the terms:
(-9 + 3x3 + 5x4) + -1(4x2 + -7x + 4) = 0

Remove parenthesis around (-9 + 3x3 + 5x4)
-9 + 3x3 + 5x4 + -1(4x2 + -7x + 4) = 0

Reorder the terms:
-9 + 3x3 + 5x4 + -1(4 + -7x + 4x2) = 0
-9 + 3x3 + 5x4 + (4 * -1 + -7x * -1 + 4x2 * -1) = 0
-9 + 3x3 + 5x4 + (-4 + 7x + -4x2) = 0

Reorder the terms:
-9 + -4 + 7x + -4x2 + 3x3 + 5x4 = 0

Combine like terms: -9 + -4 = -13
-13 + 7x + -4x2 + 3x3 + 5x4 = 0

Solving
-13 + 7x + -4x2 + 3x3 + 5x4 = 0

Solving for variable 'x'.

The solution to this equation could not be determined.

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