Question

If a+b =7 and ab=6 find a+b and a-b

Answer 1

Answer:

a+b=7

ab=6

Hence - a=6, b=1 and a-b=5

Answer 2

Answer:

a+b = 7

a-b = 5 or a-b= -5

Step-by-step explanation:

(a+b)^2 = a^2 +b^2 +2ab

49= { (a-b)^2 +2ab} +2ab

49 = {(a-b)^2} + 24

(a-b)^2 = 25

a-b = 5

or a-b = -5