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受欢迎的代数 >

x^2+(-5/7)^2=1^2

解答

x^{2} + (- \frac{5}{7})^{2} = 1^{2}

解答

x = \frac{2 6}{7}, x = - \frac{2 6}{7}

+1

十进制

x = 0.69985 \dots, x = - 0.69985 \dots

求解步骤

x^{2} + (- \frac{5}{7})^{2} = 1^{2}

展开

x^{2} + (- \frac{5}{7})^{2} : x^{2} + \frac{25}{49}

展开

1^{2} : 1

x^{2} + \frac{25}{49} = 1

将

\frac{25}{49}

到右边

x^{2} = 1 - \frac{25}{49}

化简

1 - \frac{25}{49} : \frac{24}{49}

对于

x^{2} = f (a)

解为

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

x = \frac{24}{49}, x = - \frac{24}{49}

\frac{24}{49} = \frac{2 6}{7}

- \frac{24}{49} = - \frac{2 6}{7}

x = \frac{2 6}{7}, x = - \frac{2 6}{7}

作图

流行的例子

longmult 0.4*0.5

l o n g m u lt 0.4 \cdot 0.5

(x + \frac{5}{2})^{2} - 3 = 18

化简 (-2.5)^2

s im pl i f y (- 2.5)^{2}

因式分解 6mn-9m-4n+6

f a c t or 6 mn - 9 m - 4 n + 6

x^{2} + x - 42 = 0