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人気のある代数 >

-25x^2+15x-2=0

解

- 25 x^{2} + 15 x - 2 = 0

解

x = \frac{1}{5}, x = \frac{2}{5}

+1

十進法表記

x = 0.2, x = 0.4

解答ステップ

- 25 x^{2} + 15 x - 2 = 0

解くとthe二次式

x_{1, 2} = \frac{- 15 \pm 1 5 ^{2} - 4 ( - 25 ) ( - 2 )}{2 ( - 25 )}

1 5^{2} - 4 (- 25) (- 2) = 5

x_{1, 2} = \frac{- 15 \pm 5}{2 ( - 25 )}

解を分離する

x_{1} = \frac{- 15 + 5}{2 ( - 25 )}, x_{2} = \frac{- 15 - 5}{2 ( - 25 )}

x = \frac{- 15 + 5}{2 ( - 25 )} : \frac{1}{5}

x = \frac{- 15 - 5}{2 ( - 25 )} : \frac{2}{5}

二次equationの解:

x = \frac{1}{5}, x = \frac{2}{5}

グラフ

人気の例

(2 x + 5)^{2} = 18

7000-2Q=0.01Q^2+2Q+1000

7000 - 2 Q = 0.01 Q^{2} + 2 Q + 1000

solvefor x,3x^2-2y=0

so l v e f or x, 3 x^{2} - 2 y = 0

solvefor A,A(x)A(y)=A(x+y)

so l v e f or A, A (x) A (y) = A (x + y)

m^{2} + 2 m + 32 = 0