Question

Calcule e simplifique:

√32 - 2√12 - √75 + 3√72​

Answer 1

√32−2√12−√75+ 3√72 =
√2^5 −2√2²*3−√5²*3+ 3√2³*3² =
4√2−2*2√3−5√3+ 3*2*3√2 =
4√2−4√3−5√3+ 18√2 =
22√2 -9√3