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If z is a complex number and l1,l2,l3,m1,m2,m3 are all real, then ∣∣∣∣l1z+m1¯zm1z+l1¯zm1z+l1l2z+m2¯zm2z+l2¯zm2z+l2l3z+m3¯zm3z+l3¯zm3z+l3∣∣∣∣ is equal to

Answer» If z is a complex number and l1,l2,l3,m1,m2,m3 are all real, then

l1z+m1¯zm1z+l1¯zm1z+l1l2z+m2¯zm2z+l2¯zm2z+l2l3z+m3¯zm3z+l3¯zm3z+l3
is equal to



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