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受欢迎的代数 >

1^2=0.8^2+c^2

解答

1^{2} = 0. 8^{2} + c^{2}

解答

c = \frac{3}{5}, c = - \frac{3}{5}

+1

十进制

c = 0.6, c = - 0.6

求解步骤

1^{2} = 0. 8^{2} + c^{2}

交换两边

0. 8^{2} + c^{2} = 1^{2}

将

0. 8^{2}

到右边

c^{2} = 0.36

对于

x^{2} = f (a)

解为

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

c = 0.36, c = - 0.36

0.36 = \frac{3}{5}

- 0.36 = - \frac{3}{5}

c = \frac{3}{5}, c = - \frac{3}{5}

作图

流行的例子

x^{2} + x + 1 + 8 = 0

x^{2} - 5 x - 5 + 8 = 0

4 x^{2} + 20 + 25 = 0

16 x^{2} + 26 = 1

x^2+(x+1)^2=841

x^{2} + (x + 1)^{2} = 841