Question

7(2z)+4) - 10z = 3z-2 , find value of z

Answer 1

Answer:

z=(2−3i)

z

2

−4z+13

=(2−3i)

2

−4(2−3i)+13

=−5−12i−8+12i+13

=−12i+12i−5−8+13

=0

4z

3

−3z

2

+2z+170

=4(2−3i)

3

−3(2−3i)

2

+2(2−3i)+170

=4(−46−9i)−3(−5−12i)+2(2−3i)+170

=−184−36i−3(−5−12i)+2(2−3i)+170

=−184−36i+15+36i+4−6i+170

=5−6i

Answer 2

7(2z) + 4 - 10z = 3z - 2
14z + 4 - 10z = 3z - 2
14z - 10z - 3z = - 2 - 4
14z - 13z = -6
z = -6

Hope this helps you
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