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受欢迎的代数 >

(x^2)/4 =5

解答

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

解答

x = 25, x = - 25

+1

十进制

x = 4.47213 \dots, x = - 4.47213 \dots

求解步骤

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

在两边乘以

4

x^{2} = 20

对于

x^{2} = f (a)

解为

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

x = 20, x = - 20

20 = 25

- 20 = - 25

x = 25, x = - 25

作图

流行的例子

-5x^2+70x-295=0

- 5 x^{2} + 70 x - 295 = 0

a (x) = x^{2} + 3 x - 10

solvefor x,x^2-3xy=10

so l v e f or x, x^{2} - 3 x y = 10

mx^2+(2m-3)x+m-3=0

m x^{2} + (2 m - 3) x + m - 3 = 0

solvefor p,xp^2+(x-y)p+1-y=0

so l v e f or p, x p^{2} + (x - y) p + 1 - y = 0