The impedance​ Z, in​ ohms, of a circuit element is defined as the ratio of the phasor voltage​ V, in​ volts, across the element to the phasor current​ I, in​ amperes, through the elements. That​ is, z= v/i. If the voltage across a circuit element is 12+5i volts and the current through the element is 3-2i ​amperes, determine the impedance.