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受欢迎的代数 >

(x+4)^2-6=7

解答

(x + 4)^{2} - 6 = 7

解答

x = 13 - 4, x = - 13 - 4

+1

十进制

x = - 0.39444 \dots, x = - 7.60555 \dots

求解步骤

(x + 4)^{2} - 6 = 7

将

6

到右边

(x + 4)^{2} = 13

对于

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

解为

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

解

x + 4 = 13 : x = 13 - 4

解

x + 4 = - 13 : x = - 13 - 4

二次方程组的解是:

x = 13 - 4, x = - 13 - 4

作图

流行的例子

6 x^{2} - 22 x - 8 = 0

solvefor p,p^2-83q=0

so l v e f or p, p^{2} - 83 q = 0

(x - 12)^{2} = - 27

0 = 4 x (1 - x)

completesquare 4x^2-8x-11

co m pl e t es q u a re 4 x^{2} - 8 x - 11