Mathematics
Senior High
Solved
(３)(４)(５)(６)の解き方を教えて頂きたいです。
(1) 2(x+y)²-x-y-3-(2)
(3)
a²b+b²c-a²c-b³
(5) x²-5xy+4y²+x+2y-2
6/8=50²
(x+y+1)(x-2y+1)-4y²
(4) 4x²-y²+2yz-z²
(6) a(b²-c²)+b(c²-a²)+c(a²-b²)
²8 (8)
p. 18-20
20
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