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Question 0503a
Sigma Notation
Partial Fractions
Question
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Express
x
(
x
+
7
)
(
x
−
4
)
\frac{x}{(x + 7)(x - 4)}
(
x
+
7
)
(
x
−
4
)
x
as partial fractions
A
x
+
7
+
B
x
−
4
.
\frac{A}{x + 7} + \frac{B}{x - 4}.
x
+
7
A
+
x
−
4
B
.
Attempt
A
=
{A=}
A
=
B
=
{B=}
B
=
Answer
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