Question

Factorise 36-(4a²+12a+9)​

Answer 1

36-(4a²+12a+9)​

=36-((2a)²+2.2a.3+3²)

=36-(2a+3)²    [using the formula (a+b)²=a²+2ab+b²]

=(6)²-(2a+3)²

=(6+(2a+3) (6-(2a+3)   [using the formula a²-b²=(a+b) (a-b)]

=(6+2a+3)(6-2a-3)

=(9+2a)(3-2a) ans

Answer 2

Answer:

i know the answer i am solving the question on paper ,will edit the answer once i am done

Step-by-step explanation: