An Argand diagram

Find the sum z1+z2 and difference z1-z2 and z2-z1 of z1=5+2i and z2=2+3i by an Argand diagram.

Result

s = (Correct answer is: 7 + 5i) Wrong answer
d1 = (Correct answer is: 3 - i) Wrong answer
d2 = (Correct answer is: -3+i) Wrong answer

Step-by-step explanation:

z1=5+2i z2=2+3i  s=z1+z2 s=(5+2i)+(2+3i) s=5+2i+2+3i s=(5+2)+(2i+3i) s=7+5i
d=z1z2 d2=(5+2i)(2+3i) d1=5+2i23i d1=(52)+(2i3i) d1=3i
d2=z2z1 d2=(z1z2)=d1 d2=(3i) d2=3+i



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