簡約 (3/4-5/2)^2-(3/4)^2

解

簡約

(\frac{3}{4} - \frac{5}{2})^{2} - (\frac{3}{4})^{2}

\frac{5}{2}

十進法表記

2.5

解答ステップ

(\frac{3}{4} - \frac{5}{2})^{2} - (\frac{3}{4})^{2}

(\frac{3}{4} - \frac{5}{2})^{2} = \frac{49}{16}

(\frac{3}{4})^{2} = \frac{9}{16}

= \frac{49}{16} - \frac{9}{16}

\frac{49}{16} - \frac{9}{16} = \frac{5}{2}

= \frac{5}{2}