December 2019 1 44 Report
VALENDO 15 PONTOS!!!!
Complete as lacunas das igualdades considerando os três casos de produtos notáveis.

a) (13 - 5x)^2 = 169 - ____ + 25x^2

b) (8x + 5)^2 = 64x^2 + 80x + ____

c) (16 + 3y) (16 - 3y) = ____ - 9y^2

d) (____ - 9x)^2 = 100 - 180x + 81x^2

e) (7x - ____)^2 = 49x^2 - 28x + ____

f) (7m + 5n) (7m - 5n) = 49m^2 - ____
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