Question

(b) xy, 5x'y, 7xy product this​

Answer 1

Answer:

x=1

Step-by-step explanation:

x+y)/xy = 5

x+y = 5xy

7x + 7y = 35xy

(x-5)/xy = 7

x-5 = 7xy

5x -25 = 35xy

7x + 7y = 5x -25

2x = -7y -25

x = (-7y-25)/2

x -5 = 7xy

(-7y-25)/2 - 5 = 7((-7y-25)/2)y

-7y -25 -10 = -49y^2 -175y

49y^2 + 1 68y - 35 = 0

7y^2 + 24y - 5 = 0

y = (-24 +/-(root(24^2 - 4*7*(-5)))/(2*7)

y = (-24 +/-(root(576 +140))/14

y = (-24 +/-(root(716))/14

and get x by putting y in below

x = (-7y-25)/2

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Step-by-step explanation:

Answer 2

Answer:

The answer is 35x³

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