Объяснение:
5(4х-1)²=5(16х²-8х+1)=80х²-40х+5
х(х+2)(х-2)=х(х²-4)=х³-4х
(2р-3)(2р+3)-11=4р²-9-11=4р²-20
25-(2а+3)²=5²-(2а+3)²=(5-(2а+3))(5+(2а+3))=(5-2а-3)(5+2а+3)=(2-2а)(8+2а)
(2-х)²-(3х+5)²=(2-х+3х+5)(2-х-3х-5)=(7+2х)( -3-4х)
4а-4в /а²-в² = 4(а-в) / (а-в)(а+в) = 4 / а+в
m²+3m / m²-9 = m(m+3) / (m+3)(m-3) = m / m-3
8a-8b / a²-2ab+b² = 8(a-b) / (a-b)² = 8 / a-b
