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受欢迎的代数 >

-10x^2+180=0

解答

- 10 x^{2} + 180 = 0

解答

x = 32, x = - 32

+1

十进制

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

求解步骤

- 10 x^{2} + 180 = 0

将

180

到右边

- 10 x^{2} = - 180

两边除以

- 10

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

6 x^{2} - 10 x - 19 = 0

solvefor x,f(x+h)=3x^2+4x-2

so l v e f or x, f (x + h) = 3 x^{2} + 4 x - 2

solvefor x,(y-x-2)^2=9x

so l v e f or x, (y - x - 2)^{2} = 9 x

(1+x)^2-1=100x^2

(1 + x)^{2} - 1 = 100 x^{2}

6(x-12)(x-8)=840

6 (x - 12) (x - 8) = 840