IDNStudy.com, ang iyong mapagkukunan para sa malinaw at maaasahang mga sagot. Ang aming mga eksperto ay nagbibigay ng mabilis at eksaktong sagot upang tulungan kang maunawaan at malutas ang anumang problema.

find the value of p so that P+3, 3P+2 and P+5  will be an arithmetic sequence

Sagot :

My answer is P=1/2 To get it, I subtracted the second term and the 1st term.
1) Find the difference between each term:
   a) (P + 5) - (3P + 2)
       = (P + 5) + (-3P - 2) - To subtract polynomial, change the signs of eacht
                                       term in subtrahend, then proceed to addition
       = -2P + 3, difference between third and second terms
  
    b) (3P + 2) - (P + 3)
        = (3P + 2) + (-P - 3)
        = 2P - 1, the difference between second and first terms

2) Equate the difference between the terms,  since this is an arithmetic sequence where the difference between each term is equal.
 
2P - 1 = -2P + 3
2P + 2P = 3 + 1
4P = 4
4P/4 = 4/4
P = 1

To check, substitute 1 for P:
P + 3 = 1 + 3 = 4
3P + 2 = 3(1) + 2 = 3 + 2 = 5
P + 5 = 1 + 5 = 6

Arithmetic sequence: 4, 5, 6
Common difference: 1