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Advanced Math
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Equivalent expressions
hard
The expression
(
7
x
+
y
)
(
x
+
7
y
)
(
3
x
+
y
)
is equivalent to
a
x
3
+
b
x
2
y
+
c
x
y
2
+
d
y
3
, where
a
,
b
,
c
, and
d
are constants. What is the value of
c
?
1
71
The expression \( (7x + y)(x + 7y)(3x + y) \) is equivalent to \( ax^… | Math SAT Question | Ronan SAT