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受欢迎的代数 >

7r^2-16k+3=3

解答

7 r^{2} - 16 k + 3 = 3

解答

r = \frac{4 k}{7}, r = - \frac{4 k}{7}

求解步骤

7 r^{2} - 16 k + 3 = 3

将

16 k

到右边

7 r^{2} + 3 = 3 + 16 k

将

3

到右边

7 r^{2} = 16 k

两边除以

7

r^{2} = \frac{16 k}{7}

对于

x^{2} = f (a)

解为

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

r = \frac{16 k}{7}, r = - \frac{16 k}{7}

化简

\frac{16 k}{7} : \frac{4 k}{7}

化简

- \frac{16 k}{7} : - \frac{4 k}{7}

r = \frac{4 k}{7}, r = - \frac{4 k}{7}

作图

流行的例子

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3 (x + 12) (x - 12) = 0

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