x^2-83x+169=0

解答

x^{2} - 83 x + 169 = 0

x = \frac{83 + 6213}{2}, x = \frac{83 - 6213}{2}

十进制

x = 80.91129 \dots, x = 2.08870 \dots

求解步骤

x^{2} - 83 x + 169 = 0

使用求根公式求解

x_{1, 2} = \frac{- ( - 83 ) \pm ( - 83 ) ^{2} - 4 \cdot 1 \cdot 169}{2 \cdot 1}

(- 83)^{2} - 4 \cdot 1 \cdot 169 = 6213

x_{1, 2} = \frac{- ( - 83 ) \pm 6213}{2 \cdot 1}

将解分隔开

x_{1} = \frac{- ( - 83 ) + 6213}{2 \cdot 1}, x_{2} = \frac{- ( - 83 ) - 6213}{2 \cdot 1}

x = \frac{- ( - 83 ) + 6213}{2 \cdot 1} : \frac{83 + 6213}{2}

x = \frac{- ( - 83 ) - 6213}{2 \cdot 1} : \frac{83 - 6213}{2}

二次方程组的解是:

x = \frac{83 + 6213}{2}, x = \frac{83 - 6213}{2}

40 = \frac{( 0.0826 ) ( 0.015 ) ( 200 ) ( x ) ^{2}}{( 0.1 ) ^{5}}

so l v e f or x, ln (y) = \frac{x ^{2}}{2} + c

1.36 x^{2} + 27.8 x + 304 = 500

(400 + j^{1000}) I^{2} - j^{90} I^{1} = 0

49 x^{2} - 60 = 0