SOMEONE PLS PLS HELP ME. how do u solve -4b to the power of 2 times -5b to the power of 7? pls pls help.

Assuming you wanted and not , your answer is

Step-by-step explanation:

^^ We can simplify this expression by multiplying and (Add the powers of like-terms).

Multiply it out

, 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

i dont know

step-by-step explanation:

umm. i dont know