展开 (x+(1/x))*(x-(1/x))

解答

展开

(x + (\frac{1}{x})) \cdot (x - (\frac{1}{x}))

x^{2} - \frac{1}{x ^{2}}

求解步骤

(x + (\frac{1}{x})) (x - (\frac{1}{x}))

化简

(x + (\frac{1}{x})) (x - (\frac{1}{x})) : (x + \frac{1}{x}) (x - \frac{1}{x})

= (x + \frac{1}{x}) (x - \frac{1}{x})

Apply Difference of Two Squares

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

= x^{2} - \frac{1}{x ^{2}}

s im pl i f y \frac{1}{2} (θ + \frac{sin ( 2 θ )}{2})

e x p an d \frac{5}{( δ ^{2} + 3 ) ( s + 2 )}

e x p an d 3 (p + 4 = 2 (p + 5), p = - 2)

e x p an d \frac{ab - b ^{2} - a c - b c}{( b - c ) ( a ^{2} - b ^{2} )}

\frac{\partial}{\partial x} ((z) (ln (3 x yz) - z))