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2 (x^2 + y^2 + xy) = _____?
2 (x^2 + y^2 + xy) = _____?
x^2 + y^2 + 2xy
2xy + 2y^2
2x^2 + 2y^2 + 2xy
None of these
Explanation
Distribute the 2 across the terms inside the parentheses:
2
(
x
2
+
y
2
+
x
y
)
=
2
x
2
+
2
y
2
+
2
x
y
2
(
x
2
+
y
2
+
x
y
)
=
2
x
2
+
2
y
2
+
2
x
y