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受欢迎的代数 >

0=(x+4)^2-2

解答

0 = (x + 4)^{2} - 2

解答

x = 2 - 4, x = - 2 - 4

+1

十进制

x = - 2.58578 \dots, x = - 5.41421 \dots

求解步骤

0 = (x + 4)^{2} - 2

交换两边

(x + 4)^{2} - 2 = 0

将

2

到右边

(x + 4)^{2} = 2

对于

(g (x))^{2} = f (a)

解为

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

解

x + 4 = 2 : x = 2 - 4

解

x + 4 = - 2 : x = - 2 - 4

二次方程组的解是:

x = 2 - 4, x = - 2 - 4

作图

流行的例子

19 \leq 5 x - 1 \leq 39

∣ x + 3 ∣ > 8

7x^2-20x+4=8x-10

7 x^{2} - 20 x + 4 = 8 x - 10

因式分解 m^2-3m-10

f a c t or m^{2} - 3 m - 10

2 x - 5 = x + 1