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受欢迎的代数 >

4x^2-13+3=0

解答

4 x^{2} - 13 + 3 = 0

解答

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

+1

十进制

x = 1.58113 \dots, x = - 1.58113 \dots

求解步骤

4 x^{2} - 13 + 3 = 0

将

13

到右边

4 x^{2} + 3 = 13

将

3

到右边

4 x^{2} = 10

两边除以

4

x^{2} = \frac{5}{2}

对于

x^{2} = f (a)

解为

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

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

作图

流行的例子

6 x^{2} + 4 x - 12 = 0

e = \frac{1}{2} m v^{2}

solvefor x,(x^2)/4+y^2+(z^2)/9 =3

so l v e f or x, \frac{x ^{2}}{4} + y^{2} + \frac{z ^{2}}{9} = 3

12 x^{2} = 108

solvefor x,x^2-kx+169=0

so l v e f or x, x^{2} - k x + 169 = 0