Question

Am nevoie urgent de rezolvarea acestui exercitiu ,ofer coroana ,cat mai repede va rog!!​

Answer 1

Explicație pas cu pas:

$x = 2.7 = \frac{27}{10}$

$y = 1\frac{1}{2} = \frac{3}{2}$

$z = \frac{1}{x} - \frac{1}{y} = \frac{10}{27} - \frac{^{9)} 2}{3} = \frac{10 - 18}{27} = - \frac{8}{27}$

$z \cdot \Big(x - y^{2}\Big) = - \frac{8}{27} \cdot \Big( \frac{27}{10} - \Big( \frac{3}{2}\Big)^{2}\Big) = - \frac{8}{27} \cdot \Big( \frac{27}{10} - \frac{9}{4}\Big) = - \frac{8}{27} \cdot \Big( \frac{^{4)} 27}{10} - \frac{^{10}9}{4}\Big) = - \frac{8}{27} \cdot \Big( \frac{108 - 90}{40}\Big) = - \frac{8}{27} \cdot \frac{18}{40} = - \frac{2}{15} = 0.1(3)$