evaluate i sqrt 48 xx sqrt 12 ii 128 162, Roots, General Mathematics

Question:Evaluate:
(i) `sqrt 48 xx sqrt 12` 
(ii) `sqrt 128/sqrt 162`

Answer (i) `sqrt 48 xx sqrt 12`

= `sqrt(48 xx 12)`

= `sqrt (2 xx 2 xx 12 xx 12)`

= `(2 xx 12)`

=24

(ii) `sqrt 128/sqrt 162`

= `sqrt(128/162)`

= `sqrt (64/81)`

=`8/9`

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Evaluate: (i) `sqrt 48 xx sqrt 12` (ii) `sqrt 128/sqrt 162`

Question:Evaluate: (i) `sqrt 48 xx sqrt 12` (ii) `sqrt 128/sqrt 162`

Answer (i) `sqrt 48 xx sqrt 12` = `sqrt(48 xx 12)` = `sqrt (2 xx 2 xx 12 xx 12)` = `(2 xx 12)` =24 (ii) `sqrt 128/sqrt 162` = `sqrt(128/162)` = `sqrt (64/81)` =`8/9`