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受欢迎的代数 >

2x^2+5=41

解答

2 x^{2} + 5 = 41

解答

x = 32, x = - 32

+1

十进制

x = 4.24264 \dots, x = - 4.24264 \dots

求解步骤

2 x^{2} + 5 = 41

将

5

到右边

2 x^{2} = 36

两边除以

2

x^{2} = 18

对于

x^{2} = f (a)

解为

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

x = 18, x = - 18

18 = 32

- 18 = - 32

x = 32, x = - 32

作图

流行的例子

(6x+1)/(x-2)<= 0

\frac{6 x + 1}{x - 2} \leq 0

\frac{3}{5} y = 6

4 (x + 2) > 12

因式分解 (x^2+xy^2)^2-(xy+y^2)^2

f a c t or (x^{2} + x y^{2})^{2} - (x y + y^{2})^{2}

化简 (x^{-2})^2

s im pl i f y (x^{- 2})^{2}