Answer:
Step-by-step explanation:
1)It should be (-4)
2) It should be (-6) Not (-2)
3) It should be 30x²
4) It should be xyz
5) It should be 
6) 16x²
7) 
8) 
9)
10) a² + b² +2ab
11) -9
12)x² - x + 0
Answer:
-42
Step-by-step explanation:
B)
2x - 3 = -6
-6 × 7 = (-42)
Answer:
F(x) = √2x-4
Step-by-step explanation:
X ≥ 2
Answer:
183.75
Step-by-step explanation:
25% of 245