$(3 x+11 y)^{2}$
A) $9 x^{2}+121 y^{2}$
B) $3 x^{2}+121 y^{2}$
C) $3 x^{2}+66 x y+121 y^{2}$
D) $9 x^{2}+66 x y+121 y^{2}$

Name: $(3 x+11 y)^{2}$ A) $9 x^{2}+121 y^{2}$ B) $3 x^{2}+121 y^{2}$ C) $3 x^{2}+66 x y+121 y^{2}$ D) $9 x^{2}+66 x y+121 y^{2}$
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Question

Quizplus · Accepted Answer

To expand $(3x + 11y)^2$, use the formula $(a + b)^2 = a^2 + 2ab + b^2$, which gives $9x^2 + 66xy + 121y^2$.

(3x+11y)2(3 x+11 y)^{2}(3x+11y)2 A) 9x2+121y29 x^{2}+121 y^{2}9x2+121y2 B) 3x2+121y23 x^{2}+121 y^{2}3x2+121y2 C) 3x2+66xy+121y23 x^{2}+66 x y+121 y^{2}3x2+66xy+121y2

$(3 x+11 y)^{2}$ A) $9 x^{2}+121 y^{2}$ B) $3 x^{2}+121 y^{2}$ C) $3 x^{2}+66 x y+121 y^{2}$