10khan
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√72 == ????
Please explain. How you do it
Rationalising surds. Helpppppp. I thought i could do it but.....My answer was wrong


EXPLAIN HOW U DO IT IN WORDS
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jacksonyoungri32

Answer:

6√2

Step-by-step explanation:

√72 == ????

√72 = √6^2 * 2 (Factor our the perfect square)

√72 = √36 * √2

= 6√2 ( Reduce the index of the radical and exponent with 2)

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