Mathematics
Junior High
Solved
(7)(13)の問題を教えてくださいm(_ _)m
15)(ェ-2)(r+5) + (z-2) (r+7)
()(3r+5)(x+2) -3(エ+5) (rー1)
(9) (エ-3)-(エ+4) (r-4)
2
11(a+2)(a+4)-2(a-2)?
13)(2.r+1)(2r-1)- (3c+1)(r12)
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ありがとうございます(*^^*)