Question

пж решите срочно оч надо умоляю 30 балов​

Answer 1

1. - 3)

2. D = 49-4·6·(-3) = 49+72 = 121

3. D = 25-4·1·4 = 25-16 = 9

x1 = (5-3):2 = 2:2 = 1

x2 = (5+3):2 = 8:2 = 4

4. 3x²-4x-7 = x²+6x+9-19

2x²-10x+3 = 0

D = 100-4·2·3 = 100-24 = 76

x1 = (10-√(76)):4

x2 = (10+√(76)):4