Question

what will be added to complete the square of 9a2 -12ab​

Answer 1

Answer:

$16b^{2}$

Step-by-step explanation:

$9a^{2}-12ab+16b^{2} \\=(3a)^{2}-(2*3a*4b)+(4b)^{2} [=a^{2}-2ab+b^{2}=(a-b)^{2} ]\\=(3a-4b)^{2}$