Question

Y

求算式謝謝🙏

=_Y = = 1 (Xx+1) +9
10.已知二次函數y=f(x)=-7(x+4)²+9,則二次函數f(x-3)=
O

Answer 1

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Sam Liao

將x用(x-3)直接代入就行了吧?