展开 x^2(1+sqrt(1-x^2))

解答

展开

x^{2} (1 + 1 - x^{2})

x^{2} + x^{2} 1 - x^{2}

求解步骤

x^{2} (1 + 1 - x^{2})

使用分配律:

a (b + c) = ab + a c

x^{2} (1 + 1 - x^{2}) = x^{2} \cdot 1 + x^{2} 1 - x^{2}

= x^{2} \cdot 1 + x^{2} 1 - x^{2}

使用法则:

a \cdot 1 = a

x^{2} \cdot 1 = x^{2}

= x^{2} + x^{2} 1 - x^{2}

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