Mathematics
Senior High
どうゆうふうに解くか教えてくださいm(_ _)m
10 xの値が次のそれぞれの範囲であるとき, x2+√x2-4x+4を簡単
せよ。
(1) x<0
(2) 0≦x<2
(3) 2≦x
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