Преобразуте в многочлен: 1) (x - 2) (x + 2) = 2) 2(a - 3) (a + 3) = 3) x(x+4) (x - 4) =...

Question

Преобразуте в многочлен:


1) (x - 2) (x + 2) =
2) 2(a - 3) (a + 3) =
3) x(x+4) (x - 4) =
4)(2x^2 + 3y) (2x^2 - 3y) =

Answer 1

1)x^2 - 4
2) 2a^2 + 3a - 9
3) x^3 - 4x^2 + 4x - 8
4) 4 x^2 - 9 y^2