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受欢迎的代数 >

5(x+9)^2-2=23

解答

5 (x + 9)^{2} - 2 = 23

解答

x = 5 - 9, x = - 5 - 9

+1

十进制

x = - 6.76393 \dots, x = - 11.23606 \dots

求解步骤

5 (x + 9)^{2} - 2 = 23

将

2

到右边

5 (x + 9)^{2} = 25

两边除以

5

(x + 9)^{2} = 5

对于

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

解为

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

解

x + 9 = 5 : x = 5 - 9

解

x + 9 = - 5 : x = - 5 - 9

二次方程组的解是:

x = 5 - 9, x = - 5 - 9

作图

流行的例子

(3x-4)(x+3)-(x-2)^2=3

(3 x - 4) (x + 3) - (x - 2)^{2} = 3

2 x^{2} + 10 x + 17 = 0

- x^{2} + 2 x = 1

18 - 2 x^{2} = - 28

solvefor x,x^2-4x+3=0

so l v e f or x, x^{2} - 4 x + 3 = 0