Question

4у3 – у2 = 4у – 1
нужен срочный ответ

Answer 1

Ответ:

$4y {}^{3} - y {}^{2} = 4y - 1 \\ y {}^{2} (4y - 1) = 4y - 1 \\ y {}^{2} (4y - 1) - (4y - 1) = 0 \\ (4y - 1)(y {}^{2} - 1) = 0 \\ 1) \: \: \: 4y - 1 = 0 \\ 4y = 1 \\ y = \dfrac{1}{4} \\ 2) \: \: \: y {}^{2} - 1 = 0 \\ y {}^{2} = 1 \\ y = \pm1$