Question

ПОЖАЛУУУУЙСТАААА!!!
Найти значение выражения:
$\frac{ {0.5}^{2} - 0.5}{ {0.4}^{2} + 2 \times 0.04 + {0.1}^{2} }$

Answer 1

$\frac{( \frac{1}{2} ) {}^{2} - \frac{1}{2} }{( \frac{2}{5}) {}^{2} + 0.08 + ( \frac{1}{10} ) {}^{2} } = \frac{ \frac{1}{4} - \frac{1}{2} }{ \frac{4}{25} + \frac{2}{25} + \frac{1}{100} } = \frac{ - \frac{ 1}{4} }{ \frac{1}{4} } = - 1$

Answer 2

$\frac{ {0.5}^{2} - 0.5}{ {0.4}^{2} + 2* 0.04 + {0.1}^{2} } = \frac{ {0.5}*( 0.5-1)}{ {0.4}^{2} + 2* 0.4*0.1 + {0.1}^{2} } = \frac{ {0.5}*( -0.5)}{( {0.4}+{0.1})^{2} } =- \frac{ {0.5}^2}{ {0.5^{2}} }=-1$