Question

${2}^{x {}^{2} - 2x - 3} = 1$
ПОМОГИТЕ ПОЖАЛУЙСТА ​

Answer 1

Ответ:

$2 {}^{x { }^{2 } - 2x - 3} = 1 \\ 2 {}^{x {}^{2} - 2x - 3 } = 2 {}^{0} \\ x {}^{2} - 2x - 3 = 0 \\ d = ( - 2) {}^{2} - 4 \times ( - 3) = 4 + 12 = 16 \\ x1 = \frac{2 + 4}{2} = 3 \\ x2 = \frac{2 - 4}{2} = - 1$