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受欢迎的代数 >

-7-y^2=-25

解答

- 7 - y^{2} = - 25

解答

y = 32, y = - 32

+1

十进制

y = 4.24264 \dots, y = - 4.24264 \dots

求解步骤

- 7 - y^{2} = - 25

将

7

到右边

- y^{2} = - 18

两边除以

- 1

y^{2} = 18

对于

x^{2} = f (a)

解为

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

y = 18, y = - 18

18 = 32

- 18 = - 32

y = 32, y = - 32

作图

流行的例子

x^{2} = \frac{12}{9}

solvefor x,(λ^2-25)x^2+(λ^2-36)y^2=λ

so l v e f or x, (λ^{2} - 25) x^{2} + (λ^{2} - 36) y^{2} = λ

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

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

(x^2+4x)/5 =0.75

\frac{x ^{2} + 4 x}{5} = 0.75

(2x+1)2=1+(x+1)(x-1)

(2 x + 1) 2 = 1 + (x + 1) (x - 1)