Sin6xcos6x=-1/2
2sin6xcos6x=-1
sin12x=-1
12x=-π/2 +2πn, n∈Z
x=-π/24+1/6πn, n∈Z
Ответ: <span>x=-π/24+1/6πn, n∈Z</span>
(5√x-2)² - (3√x-1)² = (4√x-2)² - 4
Ответ: 5
7a + 1 - 6a - 3 = 5
a - 2 = 5
a = 7
7 - 5k - 8 + 4k + 5k + 6 = 8
- 1 + 4k + 6 = 8
4k + 5 = 8
4k = 3
k = 3/4 = 0,75
{x+y=45 | * 3 {3x+3y-135
-
{3x-3y=39 {3x+3y=39
6y=96 | : 6
y=16
x+16=45
x=45-16
x=29