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受欢迎的代数 >

2(x^2-2)=0

解答

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

解答

x = 2, x = - 2

+1

十进制

x = 1.41421 \dots, x = - 1.41421 \dots

求解步骤

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

两边除以

2

x^{2} - 2 = 0

将

2

到右边

x^{2} = 2

对于

x^{2} = f (a)

解为

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

x = 2, x = - 2

作图

流行的例子

x^{(2)}-4x*3^{(1)}+27=0

x^{(2)} - 4 x \cdot 3^{(1)} + 27 = 0

3 (x + 2) (x + 3) = 60

9 = 3 + 21 t - 16 t^{2}

solvefor x,4xy+x^2-3y^2=2

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

(- \frac{1}{3})^{2} + y^{2} = 1