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Mathematics
Mathematics
Problem
If
f
(
x
)
=
f(x) =
f
(
x
)
=
x
2
−
(
a
+
2
)
x
+
2
a
x
−
2
\frac{x^2 - (a+2)x + 2a}{x-2}
x
−
2
x
2
−
(
a
+
2
)
x
+
2
a
x
≠
2
x \neq 2
x
=
2
2
2
2
x
=
2
x=2
x
=
2
is continuous at
x
=
2
x=2
x
=
2
, then
a
a
a
is equal to a. 0 b. 1 c. -1 d. 2
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