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受欢迎的代数 >

8^2+15^2=c^2

解答

8^{2} + 1 5^{2} = c^{2}

解答

c = 17, c = - 17

求解步骤

8^{2} + 1 5^{2} = c^{2}

交换两边

c^{2} = 8^{2} + 1 5^{2}

化简

8^{2} + 1 5^{2} : 289

对于

x^{2} = f (a)

解为

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

c = 289, c = - 289

289 = 17

- 289 = - 17

c = 17, c = - 17

作图

流行的例子

2 - 6 x = 5 - 5 (x - 1)

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

因式分解 25y^4-x^2

f a c t or 25 y^{4} - x^{2}

12 = 16

1-(2x-1)/2 =(x+2)/5

1 - \frac{2 x - 1}{2} = \frac{x + 2}{5}