Factorise: \( \Large x^{2}+18x+81 \)

A) \( \Large \left(x+9\right) \left(x-9\right) \)
B) \( \Large \left(x+9\right)^{2} \)

C) \( \Large \left(x+3\right)^{2} \)
D) \( \Large \left(x-9\right)^{2} \)

Correct answer:
B) \( \Large \left(x+9\right)^{2} \)

Description for Correct answer:


\( \Large x^{2}+18x+81 = x^{2}+2 \times 9x+9^{2} \)

=\( \Large \left(x+9\right)^{2} \)

Please provide the error details in above question

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