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Question
`4sqrt(7) xx 2sqrt(3)` =
Options
`6sqrt(10)`
`8sqrt(21)`
`8sqrt(10)`
`6sqrt(21)`
Solution
`8sqrt(21)`
Explanation;
Hint:
`4sqrt(7) xx 2sqrt(3)` = `4 xx 2sqrt(7 xx 3)`
= `8sqrt(21)`
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