化简 ((x^3-4x-15))/((x-3))

解答

化简

\frac{( x ^{3} - 4 x - 15 )}{( x - 3 )}

x^{2} + 3 x + 5

求解步骤

\frac{x ^{3} - 4 x - 15}{x - 3}

因式分解

x^{3} - 4 x - 15 : (x - 3) (x^{2} + 3 x + 5)

= \frac{( x - 3 ) ( x ^{2} + 3 x + 5 )}{x - 3}

约分:

x - 3

= x^{2} + 3 x + 5

s im pl i f y (\frac{y}{x})^{2} (\frac{3}{4 x y})^{3}

f (x) = \frac{cos ( x )}{x ^{\frac{1}{3}}}

s im pl i f y \frac{( 12 x ^{5} y ^{4} )}{( 2 x ^{3} \cdot y )}

s im pl i f y (2 m - n)^{3} + (2 m + n)^{3} + 12 m (4 m^{2} - n^{2})

f a c t or a^{2} - 1 + 2 b - b^{2}