化简 (x+1/4)(x^2-5x)

解答

化简

(x + \frac{1}{4}) (x^{2} - 5 x)

\frac{( 4 x + 1 ) ( x ^{2} - 5 x )}{4}

求解步骤

(x + \frac{1}{4}) (x^{2} - 5 x)

化简

x + \frac{1}{4} : \frac{4 x + 1}{4}

= \frac{4 x + 1}{4} (x^{2} - 5 x)

使用分式法则:

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

= \frac{( 4 x + 1 ) ( x ^{2} - 5 x )}{4}

s im pl i f y (- (a) + a^{2} - 4 c)^{2}

e x p an d [(t) cos (4 t) U (t - (\frac{π}{4}))]

e x p an d \frac{1}{( 1 - 3 x ) ^{3}}

e x p an d 3 (3 x^{2} + 2 x - 6)^{2}

s im pl i f y (q + r^{2} - y^{2})^{2}