Question

Спростити вираз: c/c+4-c^2/c^2-16

Answer 1

Ответ:

$\frac{c}{c + 4} - \frac{c {}^{2} }{(c - 4)(c + 4)}$

$\frac{c \times (c - 4) - c {}^{2} }{(c - 4)(c + 4)}$

$\frac{c ^{2} - 4ac - c ^{2} } {c {}^{2} - 16}$

$\frac{ - 4c}{c {}^{2} - 16 }$

$- \frac{4c}{c {}^{2} - 16}$