Mathematics
Senior High
Solved
何故赤丸のようになるか教えてほしいです
x^4x+2=0 を解くと,
=(-2)(-2)-1.2
x=
=2±√2
であるから,
α=
2
2
B2+√2.
よって,
2次方程式 ax +2bx+c=
x=
ac
a+B= 4
aβ=
2
aß-2-(√√2)=2.
であり,
(1)
ここで,
'+B' = (a+B)2-2aB
=42-2.2
=
12
(+)x+3(a²-B²)<0.
JR
Ba
+
2+B2
aB
2
=6,
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