Mathematics
Senior High

数1不等式の問題です。⑴⑵がわかりません。答えは写真の通りです。教えてください!

(10 xの値が次のそれぞれの範囲であるとき,Vx?+Vx"-4x+4を簡脂。 せよ。 (2) 0Sx<2 (3) 2<x 2X+2 2

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