Question

20 балов за 2 примера 3|х|-12=0 и |х-3|=9

Answer 1

Ответ:

$3 |x| - 12 = 0 \\ 3x - 12 = 0 \\ 3x = 12 \\ x = 4$

и

х=-4

х=4 и -4

2)

$|x - 3| = 9 \\ x - 3 = 9 \\ x = 9 + 3 \\ x = 12$

и

$x - 3 = - 9 \\ x = - 9 + 3 \\ x = - 6$

х=12 и -6