is x=-1. Which of the following describes the other 2 solutions?Answer and Explanation
Your Answer is
Correct Answer is K
Explanation
(4x3-2x2+x+7)÷(x+1)=4x2-6x+7,△ =b2-4ac=36-112<0, choose K.
Deformation on the left side of the equation:
4x²(x+1)-4x²-2x²+x+7
=4x²(x+1)-6x(x +1)+6x+x+7
=4x²(x+1)-6x(x+1)+7(x+1)