Решите задание с галочкой

1)(х-2)(х+2) 2)(5-3а)(5+3а) 3)4(3m-5n)(3m+5n) 4)(0,2p-1,3q)(0,2p+1,3q) 5)(xy-2/3)(xy+2/3) 6) (a^2-b^3) (a^2+b^3) 7)(0,7c-d^4)(0,7c+d^4) 8)(0,9y^5-20z^6)(0,9y^5+20z^6) 9)(7a^2b^3-1)(7a^2b^3+1) 10) (4/3mn-6/5a^3b)(4/3mn+6/5a^3b)