Question

Salut. Vreau soluția la problema de jos
$17 \times ( {17}^{3} - {17}^{2} \times 16 - 17 \times 16 - 16) = x$
Aflați "x".​

Answer 1

$17 \times ( 17 {}^{3} - 17 {}^{2} \times 16 - 17 \times 16 - 16) = x$

$17 \times (17 {}^{3} - 16 \times 17 {}^{2} - 272 - 16) = x$

$17 \times (17 {}^{3} - 16 \times 17 {}^{2} - 288) = x$

$17 {}^{4} - 16 \times 17 {}^{3} - 4896 = x$

$83521 - 16 \times 17 {}^{3} - 4896 = x$

$78625 - 16 \times 4996 = x$

$78625 - 78608 = x$

$17 = x$

$x = 17$