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受欢迎的代数 >

x^2+(1/4)^2=1

解答

x^{2} + (\frac{1}{4})^{2} = 1

解答

x = \frac{15}{4}, x = - \frac{15}{4}

+1

十进制

x = 0.96824 \dots, x = - 0.96824 \dots

求解步骤

x^{2} + (\frac{1}{4})^{2} = 1

展开

x^{2} + (\frac{1}{4})^{2} : x^{2} + \frac{1}{16}

x^{2} + \frac{1}{16} = 1

将

\frac{1}{16}

到右边

x^{2} = 1 - \frac{1}{16}

化简

1 - \frac{1}{16} : \frac{15}{16}

对于

x^{2} = f (a)

解为

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

x = \frac{15}{16}, x = - \frac{15}{16}

\frac{15}{16} = \frac{15}{4}

- \frac{15}{16} = - \frac{15}{4}

x = \frac{15}{4}, x = - \frac{15}{4}

作图

流行的例子

1-3x(4-2x)/7 =-2x(9-7x)/7

1 - 3 x \frac{4 - 2 x}{7} = - 2 x \frac{9 - 7 x}{7}

m^{2} + 1 = 3

4 k^{2} - 4 k = 0

x^{2} - 7 x = 4

solvefor x,y^3=1-x^2

so l v e f or x, y^{3} = 1 - x^{2}