Eric Nicholas K's answer to Alicia's Secondary 3 A Maths Singapore question.

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Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
1st
Rough idea, but we have to be careful at the last part because the coefficient in front of the square root at the end has to be exactly 1.
J
J
2 years ago
Might be easier to simplify the √ first.
Eric Nicholas K
Eric Nicholas K
2 years ago
I looked at it for a while before deciding to not simplify first.

Because 50 - 48 = 2.
J
J
2 years ago
For us, easy to spot that.

For students, big surds might be difficult to process. So probably breaking it down might help.

Anyway, Alicia, I've uploaded my workings.
Alicia
Alicia
2 years ago
Thank you so much!