Question

помогите пожалуйста))​

Answer 1

$- 3x {}^{2} - 6x + 46 < x {}^{2} - 14x + 49$

$- 4x {}^{2} + 8x - 3 < 0$

$4x {}^{2} - 8x + 3 > 0$

$d = b {}^{2} - 4ac$

$d = 64 - 4 \times 4 \times 3 = 64 - 48$

$d = 12$