A-Math - Surds - Solve the Equation

A-Math - Surds - Solve the Equation

If you take a look at the second line from the top \[{(\sqrt { - x} )^2} =  - x\] , some of you make this mistake \[{(\sqrt { - x} )^2} \ne x\] . The square and square root will cancel out each other, you do not square the negative sign to make it positive. Please be on the lookout .

Additional Math (A-Maths) and Math (E-Math) Tutor in Woodlands, Chua Chu Kang,

Sembawang, Bukit Panjang, Yishun and Johor Bahru.

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About Unknown

I created this Blog after my students told me that there is very little information about how to solve GCE O Level Math and Additional Math (A-Math) questions on the internet. Even if they manage to find, the solution were for very basic questions. I am a Full-time Math Tutor in Singapore. I tutor mainly in Northern Singapore (Woodlands, Chua Chu Kang, Bukit Panjang, Yishun and Sembawang). I also tutor in Johor Bahru.