展开 (sqrt(ax+b)-3-4x)(x+4x^2)

解答

展开

(a x + b - 3 - 4 x) (x + 4 x^{2})

x a x + b + 4 x^{2} a x + b - 3 x - 16 x^{2} - 16 x^{3}

求解步骤

(a x + b - 3 - 4 x) (x + 4 x^{2})

打开括号

= a x + b x + a x + b \cdot 4 x^{2} - 3 x - 3 \cdot 4 x^{2} - 4 xx - 4 x \cdot 4 x^{2}

化简

a x + b x + a x + b \cdot 4 x^{2} - 3 x - 3 \cdot 4 x^{2} - 4 xx - 4 x \cdot 4 x^{2} : x a x + b + 4 x^{2} a x + b - 3 x - 16 x^{2} - 16 x^{3}

= x a x + b + 4 x^{2} a x + b - 3 x - 16 x^{2} - 16 x^{3}

e x p an d B (- 3, - 4)

e x p an d \frac{8}{( x + 2 ) ^{2}}

e x p an d x^{\frac{4}{5}} (x - 1)^{2}

\frac{\partial}{\partial x} ((b) (w (x) x + b))

e x p an d \frac{x ( 1 - 2 ln ( x ) )}{1 - ln ( x )}