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x तथा y के किन वास्तविक मानो के लिए...

x तथा y के किन वास्तविक मानो के लिए निम्नलिखित संख्याएँ ` x ^ 2 - 7x + 9 y i ` तथा ` y ^ 2 i + 20 i - 12 ` बराबर है |

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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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I. x^(2) - 10x+24 = 0 II. y^(2) - 9y + 20 = 0