Mathematics
Junior High
Resolved
この問題で-3と6は約分できると思ったのですが約分しないのは何故ですか？教えてください(>_<)
(2) 3x²+3x-1=0
X=
-3 ±√3²-4×3×(-1)
2×3分の二は
-3±√21
( 6
(茨城)
S
XX
a=(ε+x)(S)
0=x=
-3±√21
6
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