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受欢迎的代数 >

12x^2-13=0

解答

12 x^{2} - 13 = 0

解答

x = \frac{13}{2 3}, x = - \frac{13}{2 3}

+1

十进制

x = 1.04083 \dots, x = - 1.04083 \dots

求解步骤

12 x^{2} - 13 = 0

将

13

到右边

12 x^{2} = 13

两边除以

12

x^{2} = \frac{13}{12}

对于

x^{2} = f (a)

解为

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

x = \frac{13}{12}, x = - \frac{13}{12}

\frac{13}{12} = \frac{13}{2 3}

- \frac{13}{12} = - \frac{13}{2 3}

x = \frac{13}{2 3}, x = - \frac{13}{2 3}

作图

流行的例子

solvefor x,9x^2+4z^2-18x-12y+16z=-49

so l v e f or x, 9 x^{2} + 4 z^{2} - 18 x - 12 y + 16 z = - 49

3 t^{2} + 10 t + 5 = 0

solvefor x,x^2-kx+196=0

so l v e f or x, x^{2} - k x + 196 = 0

2(x-3)(4x-1)=(4x-6)^2-4(6+x)

2 (x - 3) (4 x - 1) = (4 x - 6)^{2} - 4 (6 + x)

solvefor x,8x^2+9y^2+288=0

so l v e f or x, 8 x^{2} + 9 y^{2} + 288 = 0