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受欢迎的代数 >

sqrt(3x)=sqrt(5x+16)-4

解答

3 x = 5 x + 16 - 4

解答

x = 48, x = 0

求解步骤

3 x = 5 x + 16 - 4

去除平方根

4 x^{2} + 128 x + 1024 = 320 x + 1024

解

4 x^{2} + 128 x + 1024 = 320 x + 1024 : x = 48, x = 0

x = 48, x = 0

验证解:

x = 48

真

, x = 0

真

解为

x = 48, x = 0

作图

流行的例子

3x-x^2+(x+2)sqrt(9-x^2)=0

3 x - x^{2} + (x + 2) 9 - x^{2} = 0

sqrt(x+1)=x^3-1

x + 1 = x^{3} - 1

12+sqrt(1-4x)=15

12 + 1 - 4 x = 15

solvefor x,x+y+2sqrt(xy)=36

so l v e f or x, x + y + 2 x y = 36

4 + x = 0