√2-√5+√(2√2-3)²-√(√5-3)²
= √2-√5+3-2√2-3+√5
= -√2
√(1/3)²+³√(1-5/9)(1/3-1)
= 1/3+³√(4/9*(-2/3))
= 1/3+(-2/3)
= -1/3