Andrea Tan's answer to N L's Secondary 1 Maths Singapore question.
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For c and d, the idea is similar. For a perfect square, the powers of all prime factors have to be multiples of 2, so that when you square root them, you can sort of split evenly.
For this case, 90=2x5x3². So h would be 2x5=10. When you square root 2² x5² x3², you would get 2x5x3. That’s what I meant be split evenly.
For d, I think you can try first? If you get c you’d likely know how to do d.
ONLY PROCEED IF YOU REALY REALLY REALLY NEED HELP!!
k= 2²
For this case, 90=2x5x3². So h would be 2x5=10. When you square root 2² x5² x3², you would get 2x5x3. That’s what I meant be split evenly.
For d, I think you can try first? If you get c you’d likely know how to do d.
ONLY PROCEED IF YOU REALY REALLY REALLY NEED HELP!!
k= 2²
Date Posted:
3 years ago
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