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what the answer (8+j4)(6+9j)
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it is a complex number alisha.
since j is imaginary, j^2 = -1, so 36j^2 = -36. I'll let you take it from there.
yes it is. can you help me to prove absolte of complex number? for example \[\left| 2x+5j \right|>2\]
well |a+bi| = sqrt(a^2+b^2), so that might help.
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