Question

Find x and y such that xy =72 and x+y=17. Find x and y

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

Step-by-step explanation:

xy=72                                                .....(1)

x+y=17                                               .....(2)

from (1)

x=72/y

in (2)

72/y+y=17

72+y²=17y

y²-17y+72=0

y²-8y-9y+72=0

y(y-8)-9(y-8)=0

(y-9)(y-8)=0

y=8,9

if y=8

then x=72/8=9

if y=9

then x=72/=8