Question

$- B + Ci = 1$

• A. $\Rightarrow B = - 1,C = 0$
• B. $\Rightarrow$
• C. $(A,B,C) = (1, - 1,0)$
• D. $\frac{2x}{x^{4} + x^{2} + 1} = \frac{2x}{(x^{2} + 1)^{2} - x^{2}} = \frac{2x}{(x^{2} - x + 1)(x^{2} + x + 1)}$

Answer 1

Answer: (B)

$\Rightarrow$

Answer 2

$1 + x = \log_{a}a + \log_{a}bc = \log_{a}abc$

$\therefore$.