Factorise:

Question:

Factorise:
36a2 + 36a + 9

Solution:

We have:

$36 a^{2}+36 a+9=(6 a)^{2}+2 \times 6 a \times 3+(3)^{2}$

$=(6 a+3)^{2}$

$\therefore 36 a^{2}+36 a+9=(6 a+3)^{2}$

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