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受欢迎的代数 >

(x-5)^4-80=0

解答

(x - 5)^{4} - 80 = 0

解答

x = 245 + 5, x = - 245 + 5

+1

十进制

x = 7.99069 \dots, x = 2.00930 \dots

求解步骤

(x - 5)^{4} - 80 = 0

将

80

到右边

(x - 5)^{4} = 80

对于

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

，n 为偶数，解为

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

解

x - 5 = 480 : x = 245 + 5

解

x - 5 = - 480 : x = - 245 + 5

解为

x = 245 + 5, x = - 245 + 5

作图

流行的例子

18 x - 9 = 2 x^{3} - x^{2}

(1 + x^{2})^{2} = 0

x^{2} - x^{3} = 0

g(n)=n^3-5n^2,g(-4n)

g (n) = n^{3} - 5 n^{2}, g (- 4 n)

x^{4} + 9 x^{2} = 0