Use the table to identify the values of p and q that should be used to factor x? + 9x - 10 as (x + p)(x + 9).
р
1
-1
2
-2
q
-10
10
-5
5
p+q
-9
9
-3
3
O A. 1 and -10
O B-1 and 10
O C. 2 and -5
OD. -2 and 5

P O P O

Step-by-step explanation:

hello from mrbilldoesmath!

answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb