Nullpo201

[(1-2sin² x/2) = 0

[log2(4-x²) = 0(log2(1))

[(1-✓2sin x/2)(1+✓2sinx/2) = 0

[4-x² = 1

[1-✓2sin x/2 = 0

[1+✓2sin x/2 = 0

[x² = 3

Уравнение имеет 4 корня