Question

3(2a+c)(а-c) как решить?

Answer 1

(6a+3c)×(a-c)
6a^2-6ac+3ac-3c^2
6a^2-3ac-3c2

Answer 2

3(2a+c)*(a-c)
(6a+3c)*(a-c)
6a^2-6ac+3ac-3c^2
6a^2-3ac-3c^2