Question 650653
2a^2+2*3/a(a-1) * a^2(a-1)/2^3*a-2^2

2(a^2+3)/a(a-1) * a^2(a-1)/4(2a-1)

2(a^2+3) a^2(a-1)/2^2* a(a-1)(2a-1)

(a^2+3)a/2(2a-1)


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