Answer: Option b.
Step-by-step explanation:
1. You can rewrite it as following:
This means that you must substitute x=-6 into the limit. There is not x, then the function is always equal to 2, no matter the value of x.
This means that you must substitute x=-6 into the limit. There is not x, then the function is always equal to 1, no matter the value of x.
2. Then:
3. The answer 2.
Answer:
Step-by-step explanation:
So we have the expression:
And we wish to factor it.
First, let's make a substitution. Let's let u be equal to x². Therefore, our expression is now:
This is a technique called quadratic u-substitution. Now, we can factor in this form.
We can use the numbers -3 and -2. So:
For the first two terms, factor out a u.
For the last two terms, factor out a -3. So:
Grouping:
Now, substitute back the x² for u:
And this is the simplest form.
And we're done!
