1.5x3 степени -2.4x при x=-2

Question

1.5x3 степени -2.4x при x=-2

Answer 1

1.5x³-2.4x

при x=-2

1.5*(-2)³-2.4*(-2)=1.5*(-2)³+2.4*2=

=-2(1.5*(-2)²-2.4)=

=-2(1.5*2²-2.4)=

=-2(1.5*4-2.4)=

=2(6-2.4)=

=-2*3.6=

=-7.2.