Question

помогите ппжж 5.43
Формула
$(a - b)(a + b) = { a}^{2} + ab - ab - {b}^{2} = {a}^{2} - {b}^{2}$

Answer 1

1)(2ab)^2-c^2=2(ab)^2-c^2
2)4^2-(3xy)^2=16-9(xy)^2
3)(5a)^2-(3b)^2=25a^2-9b^2
4)(4a)^2-(5b)^2=16a^2-25b^2
5)(6y)^2-(5x)^2=36y^2-25x^2
6)(7q)^2-(2p)^2=49q^2-4p^2