(a) (p + q)^2 = p^2 + q^2
(b) raiz(a * b) = raiz(a) * raiz(b)
© raiz(a^2 + b^2) = a + b
(d) (1 + T * C) / C = 1 + T
(e) 1/(x-y) = 1/x - 1/y
(f) 1/x / (a/x - b/x) = 1/(a - b)

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