Question

determine o valor das expressoes a) (3 - √3) . (3 + √3) c) (1-√2)²

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Answer 1

a)

(3 - √3).(3 + √3)

9 + 3√3 - 3√3 - (√3)²

9 - 3 

6

c)

(1 - √2)²

1² - 2.1.√2 + (√2)²

1 - 2√2 + 2

3 -2√2