33 Вправа 33Алгебра 8 клас Бевз 2025 · § 1 · стор. 12

а) ${\displaystyle \frac{1}{x(x-1)(x+2)}}$

${\displaystyle x\ne 0}$, ${\displaystyle x-1\ne 0}$, ${\displaystyle x+2\ne 0}$;

${\displaystyle x\ne 0}$, ${\displaystyle x\ne 1}$, ${\displaystyle x\ne -2}$;

б) ${\displaystyle \frac{3-x}{(2x-1)(x^2-16)}}$

${\displaystyle 2x-1\ne 0}$, ${\displaystyle x^2\ne 16}$;

${\displaystyle x\ne 0,5}$, ${\displaystyle x\ne \pm 4}$;

в) ${\displaystyle \frac{{(x-3)}^2}{{(2x+1)}^2{(x-7)}^2}}$

${\displaystyle 2x+1\ne 0}$, ${\displaystyle x-7\ne 0}$;

${\displaystyle x\ne -0,5}$, ${\displaystyle x\ne 7}$;

г) ${\displaystyle \frac{x+13}{(x^2+1)(2x^2+3)}}$

${\displaystyle x^2+1>0}$, ${\displaystyle 2x^2+3>0}$;

x — будь-яке число.