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受欢迎的代数 >

sqrt(100^2+(x)^2)=106.9

解答

10 0^{2} + (x)^{2} = 106.9

解答

x = \frac{142761}{10}, x = - \frac{142761}{10}

+1

十进制

x = 37.78372 \dots, x = - 37.78372 \dots

求解步骤

10 0^{2} + x^{2} = 106.9

两边进行平方:

10000 + x^{2} = 11427.61

10000 + x^{2} = 11427.61

解

10000 + x^{2} = 11427.61 : x = \frac{142761}{10}, x = - \frac{142761}{10}

x = \frac{142761}{10}, x = - \frac{142761}{10}

验证解:

x = \frac{142761}{10}

真

, x = - \frac{142761}{10}

真

解为

x = \frac{142761}{10}, x = - \frac{142761}{10}

作图

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