展开 sqrt(x)(x+1)

解答

展开

x (x + 1)

x x + x

求解步骤

x (x + 1)

使用分配律:

a (b + c) = ab + a c

x (x + 1) = x x + x \cdot 1

= x x + x \cdot 1

化简

x x + x \cdot 1 : x x + x

= x x + x

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

e x p an d (x^{2} + y^{2}) x^{2} + y^{2}

s im pl i f y (x - 4)^{2}

e x p an d (sec (x) + tan (x) - 1) (sec (x) - tan (x) + 1)

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