Question

factorise
$9^2+ 2xy + y {}^{2} \\ 9$
by using
$\ \textless \ br /\ \textgreater \ a^2 + 2ab + b^2 = (a + b )^{2} \ \textless \ br /\ \textgreater \ ​$
​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Step-by-step explanation:

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