Question

thu gọn đa thức sau

M= x^3+y^3+z^3+x^3-y^3+z^3+x^3+y^3-z^3

Answer 1

\(M=x^3+y^3+z^3+x^3-y^3+z^3+x^3+y^3-z^3.\)

\(=\left(x^3+x^3+x^3\right)+\left(y^3-y^3+y^3\right)+\left(z^3+z^3-z^3\right)\)

\(=3x^3+y^3+z^3\)

Answer 2

M= \(3x^3+y^3+z^3\)

Answer 3

Ta có:

M=x³+y³+z³+x³-y³+z³+x³+y³-z³

 =(x³+x³+x³)+(y³-y³+y³)+(z³+z³-z³)

 =3x³+y³+z³

^{Vậy M=}3x³+y³+z³

Answer 4

=x^9+y^9-z^9