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人気のある代数 >

2x^2-27x+12=-10x-19

解

2 x^{2} - 27 x + 12 = - 10 x - 19

解

x = \frac{17 + 41}{4}, x = \frac{17 - 41}{4}

+1

十進法表記

x = 5.85078 \dots, x = 2.64921 \dots

解答ステップ

2 x^{2} - 27 x + 12 = - 10 x - 19

19

を左側に移動します

2 x^{2} - 27 x + 31 = - 10 x

10 x

を左側に移動します

2 x^{2} - 17 x + 31 = 0

解くとthe二次式

x_{1, 2} = \frac{- ( - 17 ) \pm ( - 17 ) ^{2} - 4 \cdot 2 \cdot 31}{2 \cdot 2}

(- 17)^{2} - 4 \cdot 2 \cdot 31 = 41

x_{1, 2} = \frac{- ( - 17 ) \pm 41}{2 \cdot 2}

解を分離する

x_{1} = \frac{- ( - 17 ) + 41}{2 \cdot 2}, x_{2} = \frac{- ( - 17 ) - 41}{2 \cdot 2}

x = \frac{- ( - 17 ) + 41}{2 \cdot 2} : \frac{17 + 41}{4}

x = \frac{- ( - 17 ) - 41}{2 \cdot 2} : \frac{17 - 41}{4}

二次equationの解:

x = \frac{17 + 41}{4}, x = \frac{17 - 41}{4}

グラフ

人気の例

solvefor x,x^2+y^2+8x-6y+30=0

so l v e f or x, x^{2} + y^{2} + 8 x - 6 y + 30 = 0

(2x+4)(2x-4)=(x-8)(x+3)+6

(2 x + 4) (2 x - 4) = (x - 8) (x + 3) + 6

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3 x^{2} - 6 x + 24 = 0

0= 2/3 (x-1)(x+3)

0 = \frac{2}{3} (x - 1) (x + 3)