Mathematics
Senior High
⑵わからないです！
鉛筆は自分の答えです！間違ってます！
何で間違えてるのかの指摘に加え解き方も教えて欲しいです！
(2) (x+y²)(x-y-z)
(4) (x²+2x+1)(x²+2x−3)
X (X+A)(x-A)
= *²= A²
= (x+AY+-A)
+4²-A²
x-(y-2)+
= y² - (y² 242 42²)
²9² +242 - 2²
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