化简 9x^2-(y^2)/(100)

解答

化简

9 x^{2} - \frac{y ^{2}}{100}

\frac{900 x ^{2} - y ^{2}}{100}

求解步骤

9 x^{2} - \frac{y ^{2}}{100}

使用分式法则:

a - \frac{b}{c} = \frac{a c - b}{c}

= \frac{9 x ^{2} \cdot 100 - y ^{2}}{100}

数字相乘:

9 \cdot 100 = 900

= \frac{900 x ^{2} - y ^{2}}{100}

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