Question

Вариант 2
А) |x| = 5
6) |x ^ 2 - 9| = 0
B) |3x + 2| = - 4
o |2x - 3| = 3
A) x ^ 2 - 2x + 4 = 4

Answer 1

$|x| = 5 \\ x = ±5\\ x1 = 5 \\ x2 = - 5$

$|x {}^{2} - 9| = 0 \\ x {}^{2} - 9 = 0 \\ x {}^{2} = 9 \\ x = ±9 \\ x1 = 9 \\ x2 = - 9$

$|3x + 2| = - 4 \\ x∈∅$

$|2x - 3| = 3 \\ 2x - 3 = 3 \\ 2x - 3 = - 3 \\ x = 3 \\ x = 0 \\ x1 = 3 \\ x2 = 0$

$x {}^{2} - 2x + 4 = 4 \\ x {}^{2} - 2x = 0 \\ x(x - 2) = 0 \\ x = 0 \\ x - 2 = 0 \\ x1 = 0 \\ x2 = 2$