Factor the expression over the complex numbers.

Here we are given the expression:

Now let us equate it to zero to find x first,

Now subtracting 18 from the other side,

taking square root on both sides,

So we will get two values of x as ,

Now we can write square root -1 as i,

So our factors become,

The final factored form becomes,

Step-by-step explanation:

1. You must apply the Quadratic formula, which is:

2. Substitute values:

3. Finally, you obtain:

answer: plz give a pic and answer choices so i can answer!

step-by-step explanation:

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for