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受欢迎的代数 >

4.5^2=x^2+3^2

解答

4. 5^{2} = x^{2} + 3^{2}

解答

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

+1

十进制

x = 3.35410 \dots, x = - 3.35410 \dots

求解步骤

4. 5^{2} = x^{2} + 3^{2}

交换两边

x^{2} + 3^{2} = 4. 5^{2}

将

3^{2}

到右边

x^{2} = 11.25

对于

x^{2} = f (a)

解为

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

x = 11.25, x = - 11.25

11.25 = \frac{3 5}{2}

- 11.25 = - \frac{3 5}{2}

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

作图

流行的例子

y^{2} - 36 \cdot 2 = 1

solvefor m,m^2n=20^{20}

so l v e f or m, m^{2} n = 2 0^{20}

solvefor x,g=3x^2+8y

so l v e f or x, g = 3 x^{2} + 8 y

16716=(400n+4n^2+4n)/3

16716 = \frac{400 n + 4 n ^{2} + 4 n}{3}

x^2+(sqrt(2))^2=0

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