zs

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

受欢迎的代数 >

solvefor x,z=9-2x^2-2y^2

解答

求解

x, z = 9 - 2 x^{2} - 2 y^{2}

解答

x = i \frac{z + 2 y ^{2} - 9}{2}, x = - i \frac{z + 2 y ^{2} - 9}{2}

求解步骤

z = 9 - 2 x^{2} - 2 y^{2}

交换两边

9 - 2 x^{2} - 2 y^{2} = z

将

2 y^{2}

到右边

9 - 2 x^{2} = z + 2 y^{2}

将

9

到右边

- 2 x^{2} = z + 2 y^{2} - 9

两边除以

- 2

x^{2} = - \frac{z + 2 y ^{2} - 9}{2}

对于

x^{2} = f (a)

解为

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

x = - \frac{z + 2 y ^{2} - 9}{2}, x = - - \frac{z + 2 y ^{2} - 9}{2}

化简

- \frac{z + 2 y ^{2} - 9}{2} : i \frac{z + 2 y ^{2} - 9}{2}

化简

- - \frac{z + 2 y ^{2} - 9}{2} : - i \frac{z + 2 y ^{2} - 9}{2}

x = i \frac{z + 2 y ^{2} - 9}{2}, x = - i \frac{z + 2 y ^{2} - 9}{2}

作图

流行的例子

y^{2} + 4 y - 2 = 0

(x-4)^{(2)}=169

(x - 4)^{(2)} = 169

solvefor x,x^2-4x-25=0

so l v e f or x, x^{2} - 4 x - 25 = 0

2 x^{2} - 6 x + \frac{2}{9} = 0

x (x + 3) = - 5