Answer:
1 is 1600
Step-by-step explanation:
Because 40 people and each person shakes each other hands so its 1600
Answer:C
The answer is B
f(x) = 4x² + 1
g(x) = x² - 5
(f-g)(x) = 4x² + 1 - (x²-5)
= 4x² + 1 - x² + 5
= 3x² + 6
