Question

D6

CÂU13:

b)(x-5)(x+4)

c)(14x^4-8x^3+4x^2):(-2x^2)

d)(-2x^4+5x^3-1):(x-1) (cột dọc)

 

Answer 1

b: =x^2+4x-5x-20

=x^2-x-20

c: =-7x^2+4x-2

d: \(=\dfrac{-2x^4+2x^3+3x^3-3+2}{x-1}\)

\(=-2x^3+3x+3+\dfrac{2}{x-1}\)