Arithmetic Challenge: Simplify the Square Root of a Sum #maths #mathinstruction #math

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This video explains how to simplify the square root of a sum without adding.
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Isn't that the long way around? Once you get 12×25 =300 you could just split the surd to sqrt(100)×sqrt(3) which is just 10×sqrt(3).

kausthubkrishnamurthy