How to Solve Radical Equations and Check for Extraneous Solutions - Quick and Simple Method

[@brendanduink]

Thank You so much for posting this with the foil method. When my teacher taught us this, she skipped over it saying we should already know how to do this. The foil method was very useful in understanding how to solve my math problems.

[@stuartweston99]

The square root of 6.25 (25/4) can be -2.5 (-5/2). Then the equation balances

[@RadiyatosheizaAhmed]

Great job sir ,ur teaching is understandable ❤

[@parthtomar6987]

Thanks for a question sir

[@kevinmadden1645]

Another way of checking is to note that the domain is x greater than 4. 4 not greater than 3/2. Therefore no solution.

[@theophonchana5025]

Square root of x^(2) + 4

[@redbrick9634]

Why does √(25/4) have to be positive?

[@kevinmadden1645]

The square root of 25/4 is 5/2. The opposite of square root of 25/4 is -5/2. Both 5/2 and -5/2 are solutions of x squared equals 25/4.

[@ChipchuotsChannel]

Giải sai phương pháp biểu thức trong căn không thể làm như thế.Căn bậc 2 của số thập phân = căn tử/căn mẫu=căn 9/ căn 4 chứ không thể quy đồng lên mẫu chung vậy được

[@theophonchana5025]

x = 12÷8 = 3÷2 = 1.5

[@theophonchana5025]

x = 1.5

[@theophonchana5025]

x variable

[@gerdrubeis6780]

Sqr of x^2+4 hoch 2 = x + 2 there is your mistake

[@theophonchana5025]

x-4

[@theophonchana5025]

8x-12 = 0

[@theophonchana5025]

x^(2)

[@meshellannrivera6770]

Wrong solutions, the square root of x square plus 4 is just simply equal to x+2.😘

[@aakashkarajgikar3935]

Very disappointing that all the solutions are extraneous to this equation, and that there is no real solution!

[@PreMath]

We have different scenarios... Thanks for the visit! You are awesome 👍 Take care dear and stay blessed😃 Kind regard