Question

Efetue as somas algébricas: (calculo, se possível)
a) 5√7 - 3√7 + 7√5 - 5
b) 7√10 - √90 + 3√40

Answer 1

a)
5√7 - 3√7 + 7√5 - 5

2√7 + 7√5 - 5
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b)
7√10 - √90 + 3√40

7√10 - √9.10 + 3√4.10

7√10 - 3√10 + 3.2√10

7√10 - 3√10 + 6√10

4√10 + 6√10

10√10