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Question
`sqrt(10) xx sqrt(15)` is equal to ______.
Options
`6sqrt(5)`
`5sqrt(6)`
`sqrt(25)`
`10sqrt(5)`
Solution
`sqrt(10) xx sqrt(15)` is equal to `underlinebb(5sqrt(6))`.
Explanation:
`sqrt(10) xx sqrt(15) = sqrt(2 xx 5) sqrt(3 xx 5)`
= `sqrt(2) xx sqrt(5) xx sqrt(3) xx sqrt(5)`
= `5sqrt(6)`
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