If Z = x^2 - 7x - 9yi such that bar Z = ...

If Z = `x^2 - 7x - 9yi` such that `bar Z = y^2 i + 20i - 12` then the number of order pair (x,y) is :

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`Z=x^2-7x-9yi`
`overlineZ=x^2-7x+9yi`
`x^2-7x=-12`
`x^2-7x+12=0`
`x=3,4`
`(y^2+20)i-12`
`y^2+20=9y`
`y^2-9y+20=0`
...

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