oblicz ; a) √(7+4√3) - √(4-2√3) =
a) √(7+4√3) - √(4-2√3) =√4(3√3)-√2(2-√3)=√12*√12-√4-√6=√12*12-4-6=√144-10=√134=11,57
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a) √(7+4√3) - √(4-2√3) =√4(3√3)-√2(2-√3)=√12*√12-√4-√6=√12*12-4-6=√144-10=√134=11,57