Mathematics
Junior High
Solved
左辺には×4しているけれど、右辺には×4しなくていい理由を教えてくださいお願いします🙏
2 (1) ax (-1) ² + 3 × (±)-a=0
a=0
a-6-4a=0
-30=6
-a=2
a=-2
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