Answer:
1. 
- Degree: 2
- Number of terms: 3
2. 
- Degree: 3
- Number of terms: 2
3. 
- Degree: 4
- Number of terms: 2
Step-by-step explanation:
For this exercise you need to remember the multiplication of signs:

1. Given:

Apply the Distributive property:

Add the like terms:

You can idenfity that:
- Degree: 2
- Number of terms: 3
2. Given:

Add the like terms:

You can idenfity that:
- Degree: 3
- Number of terms: 2
3. Given:

Apply Distributive property:

Add the like terms:

You can idenfity that:
- Degree: 4
- Number of terms: 2
You can treat x and 2x+1 just as though they are real numbers.
So f(2x+1) = 3(2x+1) - 5 = 6x + 3 - 5 = 6x - 2
In the above, I made use of something called the distributive law which says that if a,b and c are real numbers, then a(b+c) = ab + ac.
Answer:
62
Step-by-step explanation:
another way to write this is
x - 12 = 50
the answer is 62
62 - 12 = 50
Answer:
x = 1
Step-by-step explanation:
Solve for x over the real numbers:
-1 + 2 + 1/x + 1/x = 3
-1 + 2 + 1/x + 1/x = 1 + 2/x:
1 + 2/x = 3
Bring 1 + 2/x together using the common denominator x:
(x + 2)/x = 3
Multiply both sides by x:
x + 2 = 3 x
Subtract 3 x + 2 from both sides:
-2 x = -2
Divide both sides by -2:
Answer: x = 1