Объяснение:
a+b
a
2
+2⋅a⋅b
+
b
=
+2⋅a⋅b+b
(a+b)
=a+b
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Объяснение:
a+b
a
2
+2⋅a⋅b
+
a+b
b
2
=
a+b
a
2
+2⋅a⋅b+b
2
=
a+b
a
2
+2⋅a⋅b+b
2
=
=
a+b
(a+b)
2
=a+b