Question

выполните умножение одночленов:
1. (m+6)(m-6)
2. (3-b^3c)(3+b^3c)
3. (5a-7d)(5a+7d)
4. (5m^4-13)(5m^4+13)
5. (2p-d)(2p+d)

Answer 1

1.m²-6m+6m-36=m²-36=(m+6)(m-6)

Answer 2

1) (m + 6)(m - 6) = m² - 6² = m² - 36

2) (3 - b³c)(3 + b³c) = 3² - (b³c)² = 9 - b⁶c²

3) (5a - 7d)(5a + 7d) = (5a)² - (7d)² = 25a² - 49d²

4) (5m⁴ - 13)(5m⁴ + 13) = (5m⁴)² - 13² = 25m⁸ - 169

5) (2p - d)(2p + d) = (2p)² - d² = 4p² - d²