Mathematics
Junior High
199と200がどうすれば良いか分かりません。
196.(x-y+:
197. (x+5+y) (2x+5+y)
1.98. (x+z-y) (x+z+y)
1.99 (x+y-4) (x-y+4)
200. (x+y-z) (x−y+z)
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