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受欢迎的代数 >

40^2+x^2=50^2

解答

4 0^{2} + x^{2} = 5 0^{2}

解答

x = 30, x = - 30

求解步骤

4 0^{2} + x^{2} = 5 0^{2}

将

4 0^{2}

到右边

x^{2} = 900

对于

x^{2} = f (a)

解为

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

x = 900, x = - 900

900 = 30

- 900 = - 30

x = 30, x = - 30

作图

流行的例子

64 x^{2} - 144 = - 23

solvefor y,(3y^2)/2 =x^2+x+c

so l v e f or y, \frac{3 y ^{2}}{2} = x^{2} + x + c

3 x^{2} + 7 x - 49 = 0

solvefor x,(x-y)^2+xy=1

so l v e f or x, (x - y)^{2} + x y = 1

solvefor x,x^2+xy-y^2=16

so l v e f or x, x^{2} + x y - y^{2} = 16