Mathematics
Junior High

なぜ写真の丸がついてるところはマイナスになるのですか??

ok 5oset20に3xXtのTOG = 3x+(-5Q- 3)x 4)g+Q - 0) ) = 3x+(-5a-3)x+(a+2 ) (2a - 9 届 xt(at2)13x+(o- 2/ <Cゅo@2 )( 3x⑤うo+ 3 )

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