Answer:A. 3x^2-2x-1+9x+2x^2-3=5x^2+7x-4
B. 5x^3+4x^2-x-3-5x^2-7x+4=5x^3-x^2-8x+1
C. Polynomials are closed under addition and subtraction...
Step-by-step explanation:
Answer:
10 problems
Step-by-step explanation:
This is the answer because:
1) We have to solve for what 20% of 50 is since she finished 20% of her test:
20% of 50 = 10
× 
= 
= 10
Therefore, the answer is 10 problems.
Hope this helps! :D
Answer:
n = 2 or n = 3/2 thus A. is the Answer
Step-by-step explanation:
Solve for n:
2 n^2 - 7 n + 6 = 0
The left hand side factors into a product with two terms:
(n - 2) (2 n - 3) = 0
Split into two equations:
n - 2 = 0 or 2 n - 3 = 0
Add 2 to both sides:
n = 2 or 2 n - 3 = 0
Add 3 to both sides:
n = 2 or 2 n = 3
Divide both sides by 2:
Answer: n = 2 or n = 3/2
