f(x)=1x^3+2x^5+1x^7+0x^2-1x^7+9x^2+9x^5+8x^4

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Solution for f(x)=1x^3+2x^5+1x^7+0x^2-1x^7+9x^2+9x^5+8x^4 equation: 


Simplifying
f(x) = 1x3 + 2x5 + 1x7 + 0x2 + -1x7 + 9x2 + 9x5 + 8x4

Multiply f * x
fx = 1x3 + 2x5 + 1x7 + 0x2 + -1x7 + 9x2 + 9x5 + 8x4

Anything times zero is zero.
fx = 1x3 + 2x5 + 1x7 + 0x2 + -1x7 + 9x2 + 9x5 + 8x4

Reorder the terms:
fx = 0 + 9x2 + 1x3 + 8x4 + 2x5 + 9x5 + 1x7 + -1x7
Remove the zero:
fx = 9x2 + 1x3 + 8x4 + 2x5 + 9x5 + 1x7 + -1x7

Combine like terms: 2x5 + 9x5 = 11x5
fx = 9x2 + 1x3 + 8x4 + 11x5 + 1x7 + -1x7

Combine like terms: 1x7 + -1x7 = 0
fx = 9x2 + 1x3 + 8x4 + 11x5 + 0
fx = 9x2 + 1x3 + 8x4 + 11x5

Solving
fx = 9x2 + 1x3 + 8x4 + 11x5

Solving for variable 'f'.

Move all terms containing f to the left, all other terms to the right.

Divide each side by 'x'.
f = 9x + x2 + 8x3 + 11x4

Simplifying
f = 9x + x2 + 8x3 + 11x4

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