Răspuns :

Triunghiul1id

√2+√8=√2+2√2=3√2

√3+√18=√3+3√2

√5-√20=√5-2√5=-√5

3√2+√18-√32=3√2+3√2-4√2=6√2-4√2=2√2

7√3+√27-√48=7√3+3√3-4√3=10√3-4√3=6√3

√28+√63-√175=2√7+3√7-5√7=5√7-5√7=0

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