Expand.
(
4
z
+
3
y
)
(
4
z
−
3
y
)
=
\displaystyle {\left({4}{z}+{3}{y}\right)}{\left({4}{z}-{3}{y}\right)}=
(
4
z
+
3
y
)
(
4
z
−
3
y
)
=
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Question 6
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\displaystyle
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