化简 (x^2+6x+9)(x-7/2)(x^2-6x+4)

解答

化简

(x^{2} + 6 x + 9) (x - \frac{7}{2}) (x^{2} - 6 x + 4)

\frac{( x ^{2} + 6 x + 9 ) ( 2 x - 7 ) ( x ^{2} - 6 x + 4 )}{2}

求解步骤

(x^{2} + 6 x + 9) (x - \frac{7}{2}) (x^{2} - 6 x + 4)

化简

x - \frac{7}{2} : \frac{2 x - 7}{2}

= (x^{2} + 6 x + 9) \frac{2 x - 7}{2} (x^{2} - 6 x + 4)

使用分式法则:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{( x ^{2} + 6 x + 9 ) ( 2 x - 7 ) ( x ^{2} - 6 x + 4 )}{2}

e x p an d \frac{4 ( x - 2 ) ( 2 n + 1 )}{2 n + 3}

e x p an d C (0, 0) Q (2, - 3)

s im pl i f y (23 x + 52)^{2}

e x p an d \frac{1}{6} \cdot 125 x^{3} - 45 x^{2} + 0.4 x + 0.384

\frac{d}{d v} ((p) ((p + 6.9 v^{2}) (v - 3.1)))