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受欢迎的代数 >

0.126825=(1+x)^4-1

解答

0.126825 = (1 + x)^{4} - 1

解答

x = 4 1.126825 - 1, x = - 4 1.126825 - 1

+1

十进制

x = 0.03030 \dots, x = - 2.03030 \dots

求解步骤

0.126825 = (1 + x)^{4} - 1

交换两边

(1 + x)^{4} - 1 = 0.126825

将

1

到右边

(1 + x)^{4} = 1.126825

对于

(g (x))^{n} = f (a)

，n 为偶数，解为

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

解

1 + x = 4 1.126825 : x = 4 1.126825 - 1

解

1 + x = - 4 1.126825 : x = - 4 1.126825 - 1

解为

x = 4 1.126825 - 1, x = - 4 1.126825 - 1

作图

流行的例子

solvefor x,-5x^3-3y^2=17

so l v e f or x, - 5 x^{3} - 3 y^{2} = 17

- 6 + x^{4} = - 5

y - y^{3} = 0

x^4-x^3-10x^2-x+1=0

x^{4} - x^{3} - 10 x^{2} - x + 1 = 0

2x^3+5x^2-4x-3=0

2 x^{3} + 5 x^{2} - 4 x - 3 = 0