Use the rule for order of operations to simplify the expression as much as possible:
5
⋅
(
−
5
+
4
)
+
2
⋅
(
−
5
+
6
)
=
\displaystyle {5}\cdot{\left(-{5}+{4}\right)}+{2}\cdot{\left(-{5}+{6}\right)}=
5
⋅
(
−
5
+
4
)
+
2
⋅
(
−
5
+
6
)
=
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