Question

решите пожалуйста 3x³-5x²+2x-15 при x =-1

Answer 1

3х³-5х²+2х-15 при х=-1

3×(-1)³-5×(-1)²+2×(-1)-15 =

= 3×(-1)-5×1-2-15 =

= -3-5-2-15 =

= -8-17 = -25