✨ Best Answer ✨
ab(x−y)+a(y−x)
=ab(x−y)−a(−y+x)
=ab(x−y)−a(x−y)
くくり出して、
ab(x−y)−a(x−y)
=(ab−a)(x−y)
=a(b−1)(x−y)
答え a(b−1)(x−y)
分かりにくかったらスミマセン💦
✨ Best Answer ✨
ab(x−y)+a(y−x)
=ab(x−y)−a(−y+x)
=ab(x−y)−a(x−y)
くくり出して、
ab(x−y)−a(x−y)
=(ab−a)(x−y)
=a(b−1)(x−y)
答え a(b−1)(x−y)
分かりにくかったらスミマセン💦
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