Mathematics
Senior High

このふたつの問題わかる方教えてください!

*f74.【のテニ0 の 2 次不等式】 次の 2 次不等式を (0且2g0 6xオ9>0 (2) デー6zエ9<0 (jk82Dzコ| 10x十1ミ0 (4) Or

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