А) 125 - (5-3x) (25+15x+9x²) при x = - 4

Б) 127 + (5c - 3) (25c²+15c+9) при c = - (1) и (5)

125 - (5-3x) (25+15x+9x²) = 115 - (125-27x³) =

115-125+27x³=27x³-10

x=-4

27 * (-4) ³-10=27 * (-64) - 10=-1738

127 + (5c - 3) (25c²+15c+9) = 127+125c³-27=

125c³+100

c=-1

125 * (-1) ³+100=125 * (-1) + 100=-25

c=5

125 * (5³) + 100=125²+100=15725