Question

4-9a² factorisation
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Answer 1

Step-by-step explanation:

4-9a^2

=(2)^2-(3a)^2

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

Answer 2

$\huge\tt\colorbox{gold}{Answer}$

$4 - {9a}^{2} \\ {2}^{2} - {3a}^{2} \\ {a}^{2} - {b}^{2} = (a + b)(a - b) \\ (2 + 3a)(2 - 3a)$