Выполнините умножение 1) (m+4) * (m-4) 2) (5n-p) * (5n+p) 3) (12a+7b) * (12a-7b) 4) (10x^2-y^2) * (10x^4+y^2)

1) (m + 4) * (m - 4) = m * m - 4 * m + 4 * m - 4 * 4 =

= m² - 16.

2) (5 * n - p) * (5 * n + p) = 5 * n * 5 * n + 5 * n * p - 5 * n * p - p * p =

= 25 * n² - p².

3) (12 * a + 7 * b) * (12 * a - 7 * b) = 12 * a * 12 * a - 12 * a * 7 * b + 12 * a * 7 * b - 7 * b *

* 7 * b = 144 * a² - 49 * b².

4) (10 * x² - y²) * (10 * x⁴ + y²) = 10 * x² * 10 * x⁴ + 10 * x² * y² - 10 * x⁴ * y² - y² * y² =

= 100 * x⁶ + 10 * x² * y² - 10 * x⁴ * y² - y⁴.