Question

1 задание прошу вас молю

Answer 1

Объяснение:

$\frac{x {}^{2} - 17x - 38}{x {}^{2} - 13x - 30 } = 0 \: \: \: x ≠ - 2 \: \: x ≠ 15 \\ \frac{x {}^{2} + 2x - 19x - 38 }{x {}^{2} + 2x - 15x - 30 } = 0 \\ \frac{x \times (x + 2) - 19(x + 2)}{x \times (x + 2) - 15(x + 2)} = 0 \\ \frac{(x + 2) \times (x - 19)}{(x + 2) \times (x - 15)} = 0 \\ \frac{x - 19}{x - 15} = 0 \\ x - 19 = 0 \\ x = 19 \: \: \: x ≠ - 2 \: \: \: x ≠ 15 \\ x = 19$