已知0≤x≤3,化简x2+(x−3)2=_.
问题描述:
已知0≤x≤3,化简
+
x2
=______.
(x−3)2
答
∵0≤x≤3,
∴
+
x2
(x−3)2
=x-(x-3)
=x-x+3
=3.
故答案为:3.