Question

5. Решите пожалуйста уравнение: 1) (х+ 3,1 )(2x - 11,6) = 0
2) 1/21у-1/3у-1/14у=5/14

Answer 1

Ответ:

1)
$x = -3.1\\x = 5.8$

2)

$y = -1$

Пошаговое объяснение:

1)

$(x + 3,1)(2x - 11,6) = 0\\(x + 3,1) = 0 | - 3.1\\(2x - 11,6) = 0 | + 11.6\\x = -3.1\\x = 5.8$

2)

$1/21y-1/3y-1/14y=5/14\\1/21y^{4} - 1/3y^{28} - 1/14y^{6} =5/14^{6} \\4y - 28y - 6y = 30\\-30y = 30\\-y = 1\\y = -1$

Answer 2

Ответ:

1)
$x = -3.1\\x = 5.8$

2)

$y = -1$

Пошаговое объяснение:

1)

$(x + 3,1)(2x - 11,6) = 0\\(x + 3,1) = 0 | - 3.1\\(2x - 11,6) = 0 | + 11.6\\x = -3.1\\x = 5.8$

2)

$1/21y-1/3y-1/14y=5/14\\1/21y^{4} - 1/3y^{28} - 1/14y^{6} =5/14^{6} \\4y - 28y - 6y = 30\\-30y = 30\\-y = 1\\y = -1$