展开 (-x)^2

解答

展开

(- x)^{2}

x^{2}

求解步骤

(- x)^{2}

使用指数法则:

(- a)^{n} = a^{n},

若

n

是偶数

(- x)^{2} = x^{2}

= x^{2}

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

e x p an d \frac{( b ^{4} - 6 b ^{2} a ^{2} + 8 b a ^{3} - 3 a ^{4} )}{( b - a ) ^{2}}

e x p an d \frac{1}{( v + c ) ( v - c )}

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

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