Question

Помогите пожалуйста срочно

Answer 1

$tt cfrac{a^2-2b}{a}-a= cfrac{a^2-2b-a^2}{a}=cfrac{-2b}{a}=cfrac{-2cdot5}{0.2}=cfrac{-10}{0.2}=-50$

Answer 2

$frac{ {a}^{2} - 2b }{a} - a$
при а = 0,2 ; b = 5 :
$frac{ {a}^{2} - 2b }{a} - a = frac{ {0.2}^{2} - 2 times 5}{0.2} - 0.2 = frac{0.04 - 10}{0.2} - 0.2 = - frac{9.96}{0.2} - 0.2 = - frac{249}{5} - 0.2 = - frac{249}{5} - frac{1}{5} = - frac{250}{5} = - frac{250 div 5}{5 div 5} = - frac{50}{1} = - 50$