Question

найдите значение выражения -х²;(-х)²;(-х)³ при х=1 ½; -5​

Answer 1

Ответ:

$x = 1 \frac{1}{2} = 1.5 \\ - {x}^{2} = - ( { \frac{3}{2} )}^{2} = - \frac{9}{4} = -2.25 \\ ( - x)^{2} = ( { - \frac{3}{2} )}^{2} = \frac{9}{4} = 2.25\\ {( - x)}^{3} = ( { - \frac{3}{2} )}^{3} = - \frac{27}{8} = - 3.375 \\ x = - 5 \\ - {x}^{2} = - {5}^{2} = - 25 \\ ( { - x)}^{2} = ( { - 5)}^{2} = 25 \\ ( { - x})^{3} = ( { - 5)}^{3} = - 125$