展开 sqrt((x^2-x^4,))2+(y^2-y^2)2

解答

展开

(x^{2} - x^{4},) 2 + (y^{2} - y^{2}) 2

(x^{2} - x^{4},) \cdot 2 + 0

求解步骤

(x^{2} - x^{4},) \cdot 2 + (y^{2} - y^{2}) \cdot 2

= 2 (x^{2} -, x^{4}) + 2 (y^{2} - y^{2})

乘开

2 (y^{2} - y^{2}) : 0

= (x^{2} - x^{4},) \cdot 2 + 0

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

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

e x p an d e^{- t} (D^{2} + 3) - D sin (2 t)

e x p an d (2 x - 8) d x

e x p an d x^{'} + y (y - 3)