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efectueaza : ( x²√2-x√3+√4)(x²√2+x√3+√5)-(x²√2+√5)²

Răspuns :

( x²√2-x√3+√4)(x²√2+x√3+√5)-(x²√2+√5)²=2x⁴+x³√6+x²√10-x³√6-3x²-x√15+2x²√2+2x√3+2√5-2x⁴-2x²√10-25=-3x²-x√15+2x²√2+2x√3+2√5-x²√10-25=
x²(-3+2√2-√10)+x(-√15+2√3)+2√5-25