Question

162(4,5,6)Буду благодарна вам

Answer 1

$4);(2p-q)^2-(q+2p)^2=4p^2-4pq+q^2-q^2-4pq-4p^2=-4pq\5);(x-6)^2-9x^2=x^2-12x+36-9x^2=-8x^2-12x+36\6);4y^2-(y+3)^2=4y^2-y^2-6y-9=3y^2-6y-9$