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2√2+3√2=5√2
5√2=5√2
b)
√27+√12=√75
3√3+2√3=5√3
5√3=5√3
c)
√20+√80=√180
2√5+4√5=6√5
6√5=6√5
b) √27 + √12 = 3√3 + 2√3 = 5√3 = √5² * 3 = √75
c) √20 + √80 = 2√5 + 4√5 = 6√5 = √6² * 5 = √180