Mathematics
Senior High
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下から3段目の式のときに(a+b)を外に出さなくてもいいのですか?
Xic
(a+h) (h+c)(C+a) + akc
- (a+h) { hotah+c²+ac} +ahc
- (a+h) { C²+ (ath) C +ah } + alc
= [ath) c² + (ath) c + ab (ath) + alc
= (ath) c² + [athic + abc + gh(a+h)
= (a+h) c² + { (a+h)² + ali} c+ablash
= {(a+h)c + ah} {c + (ath}
= [ath + c)(ab the+ca)
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ありがとうございます🙏