Монгол Бодлогын Сан

$a>0, b>0$ бол хялбарчил.

1. $(a^{\frac12}+b^{\frac12})^2+(a^{\frac12}-b^{\frac12})^2$
2. $(a^{\frac13}+b^{\frac13})(a^{\frac23}-a^{\frac13}b^{\frac13}+b^{\frac23})$
3. $(a^{\frac16}-b^{\frac16})(a^{\frac16}+b^{\frac16})(a^{\frac23}+a^{\frac13}b^{\frac13}+b^{\frac23})$