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受欢迎的代数 >

(5/2)^2+a^2=5^2

解答

(\frac{5}{2})^{2} + a^{2} = 5^{2}

解答

a = \frac{5 3}{2}, a = - \frac{5 3}{2}

+1

十进制

a = 4.33012 \dots, a = - 4.33012 \dots

求解步骤

(\frac{5}{2})^{2} + a^{2} = 5^{2}

展开

(\frac{5}{2})^{2} + a^{2} : \frac{25}{4} + a^{2}

展开

5^{2} : 25

\frac{25}{4} + a^{2} = 25

将

\frac{25}{4}

到右边

a^{2} = 25 - \frac{25}{4}

化简

25 - \frac{25}{4} : \frac{75}{4}

对于

x^{2} = f (a)

解为

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

a = \frac{75}{4}, a = - \frac{75}{4}

\frac{75}{4} = \frac{5 3}{2}

- \frac{75}{4} = - \frac{5 3}{2}

a = \frac{5 3}{2}, a = - \frac{5 3}{2}

作图

流行的例子

- 2 (h - 5) < - 12

s im pl i f y \frac{1}{2} - \frac{5}{2}

x^3+2x^2-11x-12>= 0

x^{3} + 2 x^{2} - 11 x - 12 \geq 0

5m-(3m+11)>6(m+5)-(-3m)

5 m - (3 m + 11) > 6 (m + 5) - (- 3 m)

化简 (1/2)^{10}

s im pl i f y (\frac{1}{2})^{10}