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If z=a+ib satisfy (4+2i)z+(8−2i)z′=−2+10i, where z′ is the complex conjugate of z, then the value of |a+2b| is

Answer» If z=a+ib satisfy (4+2i)z+(82i)z=2+10i, where z is the complex conjugate of z, then the value of |a+2b| is


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