If z=4+3i,then z4-16z3+144z2-400z+630 is? Share with your friends Share 0 Neha Sethi answered this Dear student Given: z=4+3i⇒z2=4+3i2=16-9+24i=7+24iNow, z3=z×z2=4+3i7+24i=28+96i+21i-72=117i-44and z4=z22=7+24i2=49-576+336iConsider, z4-16z3+144z2-400z+630=49-576+336i-16117i-44+1447+24i-4004+3i+630=49-576+336i-1872i+704+1008+3456i-1600-1200i+630=215+720i Regards 2 View Full Answer
