Question

Dau 50 de puncte am la tema

Answer 1

Răspuns:

b) log x=log 5×24÷6=10

log x=log 2

c) nu știu

3)

z1+z2=7-3i+8+4i=15+i

z1×z2=(7-3i)(8+4i)=56+28i-24i-12×(-1)=56+4i+12=68+4i

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z1=7+3i

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z2=8-4i

_ _

z2-z1=8-4i-7+3i=1-i

|z1|=radical din 7²+(-3)²=rad 49+9=rad58

|z2|=rad8²+4²=rad64+16=rad80

|z1|+|z2|=rad58×rad80=rad4640