展开 (a+b)sqrt((a+b))

解答

展开

(a + b) (a + b)

a a + b + b a + b

求解步骤

(a + b) a + b

化简

(a + b) : a + b

= (a + b) a + b

= a + b (a + b)

使用分配律:

a (b + c) = ab + a c

a + b (a + b) = a + b a + a + b b

= a + b a + a + b b

= a a + b + b a + b

e x p an d (cot (x) - 1)^{2}

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

e x p an d x (x^{3} e^{3 x} + 4)

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

s im pl i f y (x + \frac{2}{5}) (x - \frac{1}{5})