Question

Qual é a soma do quadrado de 2/5 com o dobro de 1/9?

Answer 1

[2/5]² + 2[1/9] =
[2² / 5²] + [2 * 1] / 9 =
4/25 + 2/9 =
MMC (25,9) = 225, assim:
[4 * 9] /225 + [2 * 25] /222 =
36/225 + 50/225 =
86/225