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受欢迎的代数 >

468=500-2q^2

解答

468 = 500 - 2 q^{2}

解答

q = 4, q = - 4

求解步骤

468 = 500 - 2 q^{2}

交换两边

500 - 2 q^{2} = 468

将

500

到右边

- 2 q^{2} = - 32

两边除以

- 2

q^{2} = 16

对于

x^{2} = f (a)

解为

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

q = 16, q = - 16

16 = 4

- 16 = - 4

q = 4, q = - 4

作图

流行的例子

7^{2} = x^{2} + 5^{2}

因式分解 x^2=5x

f a c t or x^{2} = 5 x

1/2 x+2=x^2+1/2 x-14

\frac{1}{2} x + 2 = x^{2} + \frac{1}{2} x - 14

s^2-1.16s-0.51=0

s^{2} - 1.16 s - 0.51 = 0

3 n^{2} + n - 50 = n + 97