Question

como faço (√3+√2)(√27-√2)

Answer 1

$( \sqrt{3} + \sqrt{2} )( \sqrt{27} - \sqrt{2} )= \\ \\ = \sqrt{3} . \sqrt{27} - \sqrt{2} \sqrt{3} + \sqrt{2} \sqrt{27} - \sqrt{2} \sqrt{2} = \\ \\  =\sqrt{3} .3 \sqrt{3} - \sqrt{6} + \sqrt{2} .3 \sqrt{3} -2= \\ \\= 3.3- \sqrt{6} +3 \sqrt{6} -2= \\ \\ =9+2 \sqrt{6}-2=7+2 \sqrt{6}$