5x^3-x^2-5x+1 если x=0,5

Question

5x^3-x^2-5x+1 если x=0,5

Answer 1

=(5x³-x²) -(5x-1)=x²(5x-1)-(5x-1)=(5x-1)(x²-1)=(5*0,5-1)(0,5²-1)²=(2,5-1)(0,25-1)=

1,5*(-0,75)=-1,125

Answer 2

X²(5x-1)-(5x-1)=(5x-1)(x²-1)=(2,5-1)(0,25-1)=1,5*(-0,75)=-1,125