URGENT WILL MARK BRAINLIEST + 15pts
An expression is shown below: 4ck2 + 10k2 − 16ck − 40k
Part A: Rewrite the expression by factoring out the greatest common factor.
Part B: Factor the entire expression completely. Show the steps of your work.

2k(k-4)(2c+5)

Step-by-step explanation:

4ck² + 10k² - 16ck - 40k

2k²(2c + 5) -8k(2c + 5)

(2c + 5)(2k² - 8k)

(2c + 5)[2k(k - 4)]

2k(k-4)(2c+5)

answer: 1 and 3

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