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人気のある代数 >

x^2-100x-300=0

解

x^{2} - 100 x - 300 = 0

解

x = 10 (5 + 27), x = 10 (5 - 27)

+1

十進法表記

x = 102.91502 \dots, x = - 2.91502 \dots

解答ステップ

x^{2} - 100 x - 300 = 0

解くとthe二次式

x_{1, 2} = \frac{- ( - 100 ) \pm ( - 100 ) ^{2} - 4 \cdot 1 \cdot ( - 300 )}{2 \cdot 1}

(- 100)^{2} - 4 \cdot 1 \cdot (- 300) = 407

x_{1, 2} = \frac{- ( - 100 ) \pm 40 7}{2 \cdot 1}

解を分離する

x_{1} = \frac{- ( - 100 ) + 40 7}{2 \cdot 1}, x_{2} = \frac{- ( - 100 ) - 40 7}{2 \cdot 1}

x = \frac{- ( - 100 ) + 40 7}{2 \cdot 1} : 10 (5 + 27)

x = \frac{- ( - 100 ) - 40 7}{2 \cdot 1} : 10 (5 - 27)

二次equationの解:

x = 10 (5 + 27), x = 10 (5 - 27)

グラフ

人気の例

x = x^{2} + 3 x

t^{2} - 4 = 12

solvefor x,12x^2-120x+209=0

so l v e f or x, 12 x^{2} - 120 x + 209 = 0

quadraticformula 3x^2-6x+1=0

q u a d r a t i c f or m u l a 3 x^{2} - 6 x + 1 = 0

completesquare 2x^2-7x-5=0

co m pl e t es q u a re 2 x^{2} - 7 x - 5 = 0