Преобразуйте в многочлен: 1) (c-6)² 2) (2a-3b)² 3) (5-a)(5+a) 4) (7x+10y)(10y-7x) 5) (4b+b²)² 6) (2/7x⁴-9y²z)(2/7x⁴+9y²z)

1) (c - 6)² =c^2 - 12c +36 2) (2a - 3b)² = 4a^2 - 12ab + 9b^23) (5 - a)(5 + a) = 25 - a^24) (7x + 10y)(10y - 7x) = 100y^2 - 49x^25) (4b + b²)² = 16b^2 + 8b^3 + b^46) (2/7x⁴ - 9y²z)(2/7x⁴ + 9y²z) = 4/49x^8 - 81y^4z^2