CBSE Class 11-science Answered
FIND
Asked by | 21 Sep, 2008, 07:59: AM
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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