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受欢迎的代数 >

8/((x+8)^2)=7

解答

\frac{8}{( x + 8 ) ^{2}} = 7

解答

x = \frac{2 2}{7} - 8, x = - \frac{2 2}{7} - 8

+1

十进制

x = - 6.93095 \dots, x = - 9.06904 \dots

求解步骤

\frac{8}{( x + 8 ) ^{2}} = 7

在两边乘以

(x + 8)^{2}

8 = 7 (x + 8)^{2}

解

8 = 7 (x + 8)^{2} : x = \frac{2 2}{7} - 8, x = - \frac{2 2}{7} - 8

x = \frac{2 2}{7} - 8, x = - \frac{2 2}{7} - 8

验证解

找到无定义的点（奇点）:

x = - 8

将不在定义域的点与解相综合:

x = \frac{2 2}{7} - 8, x = - \frac{2 2}{7} - 8

作图

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