sqrt(u-8)=sqrt(43-2u)

解答

u - 8 = 43 - 2 u

u = 17

求解步骤

u - 8 = 43 - 2 u

两边进行平方:

u - 8 = 43 - 2 u

u - 8 = 43 - 2 u

解

u - 8 = 43 - 2 u : u = 17

u = 17

验证解:

u = 17

真

解是

u = 17

9 x + 2 = - x - 4

6 x = 8 x + 4 - 2

x - 4 - 3 = - 5

x - 1 + 1 = x + 4

- 7 3 x - 5 = - 28