a)
x^3-2x+1+3/x+3x=x^3+x+1+3/x
b)
x^3-2x+1-(2x+3)+3/x+3x=x^3-2x+1-2x-3+3/x+3x=x^3-x+1+3/x
c)
(x^3-2x+1)(3/x+3x)=3x^2+3x^4-6-6x^2+3/x+3x=3x^4-3x^2+3x-6+3/x
2.
12*8x/16x^2 + 5x*16x^2/16x^2 -11/16x^2=(96x+80x^3-11)/16x^2
1(2x-1)/[4x^2(2x-1)] - 4x^2(1-x)/[4x^2(2x-1)]=[2x-1-4x^2+4x^3}/[4x^2(2x-1)]
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a)
x^3-2x+1+3/x+3x=x^3+x+1+3/x
b)
x^3-2x+1-(2x+3)+3/x+3x=x^3-2x+1-2x-3+3/x+3x=x^3-x+1+3/x
c)
(x^3-2x+1)(3/x+3x)=3x^2+3x^4-6-6x^2+3/x+3x=3x^4-3x^2+3x-6+3/x
2.
12*8x/16x^2 + 5x*16x^2/16x^2 -11/16x^2=(96x+80x^3-11)/16x^2
b)
1(2x-1)/[4x^2(2x-1)] - 4x^2(1-x)/[4x^2(2x-1)]=[2x-1-4x^2+4x^3}/[4x^2(2x-1)]