Mathematics
Senior High
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3 次の2次不等式を解け。
(1) x2-2x+3 < 0
(3)
-x2+3x-50
(2) 2x2+5x+4≧0
(4) -2x≧3x2+1
4
次の2次不等式を解け。
2
(1) x² +7x+6≤0
(3) 9x² +24x+16≤0
(2) -x²+2x+4≤0
(4) -2x²-6x-5>0
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