Question

Помогите пожалуйста!

Answer 1

$(x + 23y) {}^{2} - (23x + y) {}^{2} \ = ( times + 23y - 23 x - y) \ (x + 23y + 23x + y) = \ ( - 22x + 22y)(24x + 24y) \ = - 22(x - y) times 24(x + y) \ = - 528(x - y)(x + y) \ = - 528(x {}^{2} times y {}^{2} )$