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人気のある代数 >

13=(5x^2)/(2(32.2))-20+4(0.1x)^2

解

13 = \frac{5 x ^{2}}{2 ( 32.2 )} - 20 + 4 (0.1 x)^{2}

解

x = \frac{3.50647 E 15}{1.25 E 13}, x = - \frac{3.50647 E 15}{1.25 E 13}

+1

十進法表記

x = 16.74865 \dots, x = - 16.74865 \dots

解答ステップ

13 = \frac{5 x ^{2}}{2 ( 32.2 )} - 20 + 4 (0.1 x)^{2}

拡張

\frac{5 x ^{2}}{2 ( 32.2 )} - 20 + 4 (0.1 x)^{2} : \frac{5 x ^{2}}{64.4} - 20 + 0.04 x^{2}

13 = \frac{5 x ^{2}}{64.4} - 20 + 0.04 x^{2}

辺を交換する

\frac{5 x ^{2}}{64.4} - 20 + 0.04 x^{2} = 13

20

を右側に移動します

\frac{5 x ^{2}}{64.4} + 0.04 x^{2} = 33

以下で両辺を乗じる:

64.4

5 x^{2} + 2.576 x^{2} = 2125.2

7.576 x^{2} = 2125.2

以下で両辺を割る

7.576

x^{2} = 280.51742 \dots

x^{2} = f (a)

の場合, 解は

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

x = 280.51742 \dots, x = - 280.51742 \dots

280.51742 \dots = \frac{3.50647 E 15}{1.25 E 13}

- 280.51742 \dots = - \frac{3.50647 E 15}{1.25 E 13}

x = \frac{3.50647 E 15}{1.25 E 13}, x = - \frac{3.50647 E 15}{1.25 E 13}

グラフ

人気の例

\sqrt[ 1/2 ]{20+x}=5

\frac{1}{2} 20 + x = 5

2 (x - 2)^{2} = 0

3 x^{2} + 15 - 15 = 15

1/4 x^2+4x+16=0

\frac{1}{4} x^{2} + 4 x + 16 = 0

6 x + 9 = 2 x^{2}