Mathematics
Junior High
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2の(1)の求め方を教えてください
ちなみに答えは11です
x2
16
xy+ y2
3
2 次の式の値を求めなさい。 (2点×2=4点)
2
(1)x+y=1, xy=-3のとき、 2x2+xy+2y? の値
-3
(2xーy=7のとき、 x2-2xy+y2-2x+2y-8 のf
1- 36 +4-16t4-8
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