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CBSE Class 11-science Answered

FIND
Asked by | 21 Sep, 2008, 07:59: AM
answered-by-expert Expert Answer

we know that i2 = -1

using this x2 = 25 - 9 + 30i = 16 +30i

y2 = 25 - 9 -30i = 16 -30i

xy = 25 + 9 -15i +15i = 34

so x2 -xy +y2 = 2*16 -34 = -2

Answered by | 21 Sep, 2008, 12:38: PM
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