Mathematics
Junior High
Solved
赤の2行目の±√25が√23になるので、途中式を教えてほしいです🙇🏻
(6) 3x²+x-2=0
x=-
x=
-1±√1²-4×3× (-2)
2×3
-1±√25_ -1±5
6
6
-1+5 2
6
3, x=
-1-5
6
mod
8 mo
x=
=-1
23
x=-1
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