Question

please do with method

Answer 1

$(a - b )\: (a + b) = {a }^{2} - {b}^{2}$

Answer 2

(6a-5b)(5a+6b)
=6a(5a+6b)-5b(5a+6b)
=30a^2+36ab-25ab-30b^2
=30a^2+11ab-30b^2
this is the simplest answer for this question.
please put it as brainlist