Question

(2x^3 + x^2 + 10x + 30) : (2x + 1)

GIÚP VỚI !!!!!!!!!!!!!!!!!

 

Answer 1

\(=\left(2x^3+x^2+10x+5+25\right):\left(2x+1\right)\\ =\left[x^2\left(2x+1\right)+5\left(2x+1\right)+25\right]:\left(2x+1\right)\\ =x^2+5\left(\text{dư }25\right)\)