WAEC - Mathematics (2016 - No. 12)
Simplify; \(\frac{2}{1 - x} - \frac{1}{x}\)
\(\frac{x + 1}{x(1 - x)}\)
\(\frac{3x - 1}{ x(1 - x)}\)
\(\frac{3x + 1}{ x(1 - x)}\)
\(\frac{x + 1}{ x(1 - x)}\)
설명
\(\frac{2}{1 - x} - \frac{1}{x}\) = \(\frac{2x - 1(1 - x)}{x(1 - x)}\)
= \(\frac{2x - 1 + x}{x(1 - x)}\)
= \(\frac{3x - 1}{x(1 - x)}\)
= \(\frac{2x - 1 + x}{x(1 - x)}\)
= \(\frac{3x - 1}{x(1 - x)}\)