Question

а^2*b^2-c^2=
16a^2-64b^2=
4c^2-49d^2=

Answer 1

а^2*b^2-c^2= (ab+c)(ab-c)
16a^2-64b^2= (4a+8b)(4a-8b)
4c^2-49d^2= (2c+7d)(2c-7d)