Mathematics
Senior High
高一数学
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19
(6)
の2次方程
(6) 2の2次方程式²-2(2a-1)x+10g²-13a-5=0が実数解をもつように,定数a
2²-40-12x1100² -130-5=0
1/4 = 10-11²-48²-170²
の範囲を求めよ。
判別式もとおく
月30となればたい
x210a²-17a-12-550
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