Question

Determine (c-n)²: *

c² - 2cn + n²
c²-n²
c² + 2cn + n²
2c² + 2cn + n²
c² + c²n² + n²

Answer 1

Resposta:

$(c - n)^{2} = \\ c^{2} - 2 \times c \times n + n^{2} = \\ = c^{2} - 2cn + n ^{2}$