Question

If p-q = 9 and pq= 36 evaluate p+q

Answer 1

Answer:

Step-by-step explanation:

GIVEN :

P-Q = 9

P = 9+Q

PQ = 36

(9+Q)Q= 36

9Q +Q²-36 = 0

Q²+9Q -36 = 0

PRODUCT = -36

SUM = 9

NUMBERS 12,-3

Q²-3Q +12Q -36 =0

Q (Q-3)+12(Q-3) =0

(Q-3)(Q+12) =0

Q = +3 OR Q = -12

WHEN Q = -3

P = 9-3

P = 6        

THAT IS P+Q = 6+-3

                      = 3

WHEN Q = -12

P = 9-12

P = -3

P+Q = -3-12

       = -15.

HOPE THIS HELPS.