Step-by-step explanation:
3. is A x^2 -6x -7
4. is C 7x^2 - 4x + 2
7 B
8 A
9 D
Answer:
[tex]question3. \: x {}^{2} - 6x - 7 \\question4. \: 7x {}^{2} - 4 x + 2 \\ question7. \: x {}^{2} - 6x + 5 \\ question8.\: 7x {}^{2} - 7x - 8 \\ question9.\: - 2x + 9[/tex]
