Mathematics
Senior High
(2)番を教えていただきたいです。
56」
次の等式がxについての恒等式となるように,定数 a, b, cの値を定めよ。
(1)x?+2x=a(x+3}°+b(x+3)+c
次
2x-1
a
b
(xー1)x?
Xー1
x2
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