Question

Упростите выражение - (a^2+2)//(0,5a+2a^2)+(a^2+a)//(81a^2+4)

Answer 1

$frac{a^2+2}{0.5a+2a^2}+frac{a^2+a}{81a^2+4}\\ frac{2a^2+4}{4a^2+a}+frac{a^2+a}{81a^2+4}\\ frac{(2a^2+4)(81a^2+4)+(a^2+a)(4a^2+a)}{(4a^2+a)(81a^2+4)}=\\ frac{166a^4+5a^3+333a^2+16}{324a^4+81a^3+16a^2+4a}$