Răspuns:
(a+√3)²=a²+2√3a+3
(√2x+√3y)²=2x²+2√6xy+3y²
(a²+5√2b³)²=a⁴+10√2a²b³+50b6
(x+2√3)²=x²+4√3x+12
(2√2x+5√5y)²=8x²+20√10xy+125y²
