Multiply by using the rule for the square of a binomial.
-$$\left( 9 x + \frac { 1 } { 9 } \right) ^ { 2 }$$
A) $81 x ^ { 2 } + x + \frac { 1 } { 81 }$
B) $81 x ^ { 2 } + 2 x + \frac { 1 } { 81 }$
C) $81 x ^ { 2 } + \frac { 1 } { 81 }$
D) $81 x ^ { 2 } + \frac { 2 } { 9 } x + \frac { 1 } { 81 }$

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The Answer of Multiply by using the rule for the square of a binomial.
-$$\left( 9 x + \frac { 1 } { 9 } \right) ^ { 2 }$$
A) $81 x ^ { 2 } + x + \frac { 1 } { 81 }$
B) $81 x ^ { 2 } + 2 x + \frac { 1 } { 81 }$
C) $81 x ^ { 2 } + \frac { 1 } { 81 }$
D) $81 x ^ { 2 } + \frac { 2 } { 9 } x + \frac { 1 } { 81 }$

Multiply by Using the Rule for the Square of a Binomial