Mathematics
Senior High
4 (2)②を丁寧に教えてくださるとありがたいです。
4(1) a+b=-2, .ab=-5 のとき、 次の式の値を求めよ。
1
1
ーナー
b
a
2
b
a
b
a
(2) r+y+z=3, r' +p" +z" = 5, yz=2 のとき, 次の式の値を求めよ。
1
V+ VE+ ZX
2 x++z
3 (x+yXy+=)(=+x)
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