Question

9a^2-16 factories. please help me​

Answer 1

Answer:

Step-by-step explanation:

$\sf 9a^{2} -16\\\implies \sf (3a)^{2} -4^{2}\\Formula (a)^{2}-(b)^{2}=(a+b)(a-b)\\\implies \sf (3a-4)(3a+4)$