Mathematics
Senior High
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2 次の2次不等式を解け。
(1) x² >2x+8
(3)
x(x-4)≦2(x2-3)
(2) 2x²-3x≤9
(4) (2x+1)^2+24> (x+5)^
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(3)ってこうなるんじゃないんですか？