Mathematics
Senior High
因数分解についてなのですが矢印のところが意味がわかりません。教えてください
題2 チャート基本例題14
(2) 3x2-5ax+2a?-3x+a-6
374(-5a-3)x+20+a-6
-
3+(-5a-3)x+ (42X2a-3)
-{ャ-(at>)}}3r-(2a-→)
ー(x-a-2)(31ー2A+3)
、2→2
1e+2)→-34-
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