x^2-32x+60=0

解答

x^{2} - 32 x + 60 = 0

x = 30, x = 2

求解步骤

x^{2} - 32 x + 60 = 0

使用求根公式求解

x_{1, 2} = \frac{- ( - 32 ) \pm ( - 32 ) ^{2} - 4 \cdot 1 \cdot 60}{2 \cdot 1}

(- 32)^{2} - 4 \cdot 1 \cdot 60 = 28

x_{1, 2} = \frac{- ( - 32 ) \pm 28}{2 \cdot 1}

将解分隔开

x_{1} = \frac{- ( - 32 ) + 28}{2 \cdot 1}, x_{2} = \frac{- ( - 32 ) - 28}{2 \cdot 1}

x = \frac{- ( - 32 ) + 28}{2 \cdot 1} : 30

x = \frac{- ( - 32 ) - 28}{2 \cdot 1} : 2

二次方程组的解是:

x = 30, x = 2

4 x^{2} + 25 - 20 x + 4 x^{2} = 17

2 x^{2} - 3 x - 18 = 0

36 x^{2} + 84 x = 0

1537.362612 = 0.1775 \cdot x^{2} - 36.621 \cdot x + 2005.1

14400 = x^{2} - 180 x + 20000