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=√2.√2+√2.√3+2√2-√2.√5+√3.√2+√3.√3+2√3-√3.√5+2√2+2√3+4-2√5+√5.√2+√5√3+2√5-√5√5
=√4+√6+2√2-√10+√6+√9+2√3-√15+2√2+2√3+4-2√5+√10+√15+2√5-√25
=2+√6+√6+2√2+2√2-√10+√10+3+2√3+2√3-√15+√15+4-2√5+2√5-5
=2+3+4-5+2√6+4√2+2√3
=2+2√6+4√2+2√3