(30)/(4.9)=x^2

解

\frac{30}{4.9} = x^{2}

x = \frac{10 3}{7}, x = - \frac{10 3}{7}

十進法表記

x = 2.47435 \dots, x = - 2.47435 \dots

解答ステップ

\frac{30}{4.9} = x^{2}

辺を交換する

x^{2} = \frac{30}{4.9}

x^{2} = f (a)

の場合, 解は

x = f (a), - f (a)

x = \frac{30}{4.9}, x = - \frac{30}{4.9}

\frac{30}{4.9} = \frac{10 3}{7}

- \frac{30}{4.9} = - \frac{10 3}{7}

x = \frac{10 3}{7}, x = - \frac{10 3}{7}