December 2019 2 222 Report
Quais das seguintes igualdades são verdadeiras ? Cálculos
a) √20+√5=√25
b) √20+√5=√45
c) √20.√5=10
d) √20-√5=√15
e) √20-√5=√5
f) √20:√5=2
g) √2+3²=3√2
h) √2²+3²=5
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