Question

xy – 3x – 4y² + 12y​

Answer 1

Step-by-step explanation:



Xy =6

x=6/y

3x+2y=12

3x6/y+2y=12

18/y+2y^2/y=12

18+2y^2=12y

2y^2 -12y+18=0

2y^2-6y-6y+18

2y(y-3)-6(y-3)

y=-6/2 y=-3

y=-3

xy=6

-3x=6

x=-2

9x^2+4y^2

9x4+4x9

36+36

72

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