Question

36 a square + 36 A + 9

Answer 1

this can help you ( answer)

Answer 2

$36 {a }^{2} + 36a + 9 \\ 4 {a}^{2} + 4a + 1 \\ {a}^{2} + a + 1 \div 4 \\ {a}^{2} + 1 \div 2a + 1 \div 2a + 1 \div 4 \\ a(a + 1 \div 2) + 1 \div 2(a + 1 \div 2) \\( a + 1 \div 2)(a + 1 \div 2)$