1- Efetue
a) ✓2-5✓2
b) 9✓5-3✓5-6✓5
c) 10✓a+✓a-3✓a
d) 10✓11-✓11
e) ✓5+✓5
f) 10✓13-11✓13

2- Efetue
a) 2+3+✓7
b) 8✓10-6-3✓10
c) 5✓2-4-8✓2
d) ✓63-✓7
e) ³✓5-³✓40+³✓625
f) 12✓3-✓5-8✓3-6✓5
g)✓48+✓27-✓12
h)✓108+✓75-2✓48
i) ✓54-2✓96+✓24+✓6

É PRA HOJE!​
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