Question

Упростите выражение 6x²/x²- 9 × x-3/3x

Answer 1

$\dfrac{6x {}^{2} }{x {}^{2} - 9 } \times \dfrac{x - 3}{3x} = \dfrac{6x {}^{2} }{x {}^{2} - 3 {}^{2} } \times \dfrac{x - 3}{3x} = \dfrac{2x}{(x - 3)(x + 3)} \times (x - 3) = \dfrac{2x \times (x - 3)}{(x - 3)(x + 3)} = \dfrac{2x}{x + 3} .$