Question

Help me out please ty!

Answer 1

a5 = 2604

Explanation:

a1 = 4

a2 = -5(4)-1 = -21

a3 =-5(-21)-1 = 104

a4 = -5(104)-1 =-521

a5 =-5(-521)-1 = 2604

Answer 2

`\qquad\qquad\huge\underline{{\sf Answer}}♨`

Let's solve ~

`\qquad \tt \dashrightarrow \:a1 = 4`

Now, let's proceed next till we get
`\tt a_5`

`\qquad \tt \dashrightarrow \: a_2 = - 4a_((2 - 1))+ 5`

`\qquad \tt \dashrightarrow \: a_2 = - 4a_(1)+ 5`

`\qquad \tt \dashrightarrow \: a_2 = (- 4 * 4)_{}+ 5`

`\qquad \tt \dashrightarrow \: a_2 = - 16_{}+ 5`

`\qquad \tt \dashrightarrow \: a_2 = - 11`

Similarly,

`\qquad \tt \dashrightarrow \: a_3 = 49`

`\qquad \tt \dashrightarrow \: a_4= - 191`

Now, let's solve for
`\tt a_5`

`\qquad \tt \dashrightarrow \: a_5= - 4( - 191) + 5`

`\qquad \tt \dashrightarrow \: a_5= 764 + 5`

`\qquad \tt \dashrightarrow \: a_5= 769`