How do you solve #2z^2 - 16z - 1768 = 0# by completing the square?

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Answer 1 · 2016-04-21T14:39:00

Dividing the given eq by 2
# z^2-2*z*4+4^2-16-884=0#
#=>(z-4)^2=900=30^2#
#: .z=4+30=34 and z=-30+4=-26#