Question

розвиток
5ах²+5а²х, якщо а =2/5 х=3/5
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Answer 1

5ах²+5а²х, если a = $\frac{2}{5}$ , x = $\frac{3}{5}$

5 * $\frac{2}{5}$ * ( $\frac{3}{5}$ )² + 5 * ( $\frac{2}{5}$ )² * $\frac{3}{5}$ = 2 * $\frac{9}{25}$ + 3 * $\frac{4}{25}$ = $\frac{2*9+3*4}{25}$ = $\frac{18+12}{25}$ = $\frac{30}{25}$ = $\frac{6}{5}$ = 1 $\frac{1}{5}$ = 1,2

Ответ: 1,2