=5√2-√2×√9+√2/2 ( 1)
=5√2-3√2+√2/2 (2)
=2√2+√2/2 (3)
=4√2+√2 (4)
= 5 (5)
Everything else is right. (4) This is wrong: 2√2+√2/2=2√2+0.5√2=2.5√2.
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