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13-10-2019
Mathematics

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Can someone please help

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Аноним Аноним

13-10-2019

a. f(a) + 3 = ?

(a^2 + 4) + 3 = a^2 + 7

b. f(a + 3) = ?

(a + 3)^2 + 4

a^2 + 9 + 4 = a^2 + 13

c. f(d + b) = ?

(d + b)^2 + 4

d^2 +b^2 + 4 = d^2 +b^2 + 4

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