Question

ALguem consegue responder a 3 e a 4 ? 

Answer 1

3) (P^2-Q^2)/(P+Q)^2 = (P-Q)(P+Q)/(P+Q)^2 = (P-Q)/(P+Q) = (5001-4999)/(5001+4999) = 2/10 000 = 1/5 000 = 0.0002