Mathematics
Senior High
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(3)の求め方を教えてください🙇♂️
▷▷ 71 次の等式を満たす実数a,b の値を求めよ。)
(1) (2a+b)+(a-3b)i=5-i
S20+6=5
a-36=-1
2a+b=5
-120-6b=-2
76=7
(2) (a+2)+(3a-b) i=0
Sa-2=0
Ba-b=0
a=2
6-6=0
b = 6
(3) (i-5)a+(3+2i)b=4+7i
b = 1
a-3=-1
a=2
a=2,b=1
a=2₁b = 6
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