因式分解 18x-2x^5

解答

因式分解

18 x - 2 x^{5}

2 x (3 + x^{2}) (3 - x^{2})

求解步骤

18 x - 2 x^{5}

因式分解出通项

2 x : 2 x (9 - x^{4})

= 2 x (9 - x^{4})

因式分解

9 - x^{4} : (3 + x^{2}) (3 - x^{2})

= 2 x (3 + x^{2}) (3 - x^{2})

\frac{x ^{2}}{2} + \frac{7}{2} x = 1

2 (z - 10) = - 4

f a c t or 2 a - 10

8 (x - 2) - 5 (3 - x) + 16 = 15 - 4 (3 - x)

f a c t or 2 x^{5} (x + 3)^{4} - 5 x^{6} (x + 3)^{3}