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Evaluate: √ 5 ( 2 3 4 − 3 10 ) - Mathematics

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Sum

Evaluate: `sqrt(5(2 3/4 - 3/10)`

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Solution

`sqrt(5(2 3/4 - 3/10)`


= `sqrt(5(11/4 - 3/10)`


= `sqrt(5((55 -6)/(20))`


= `sqrt(5(49/20)`


= `sqrt((5 xx 49)/(20)`

 

= `sqrt((49)/(4)`


= `sqrt((7 xx 7)/(2 xx 2)`


= `(7)/(2)`


= `3 (1)/(2)`

Concept: Concept of Square Roots
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APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 3 Squares and Square Root
Exercise 3 (A) | Q 7.4 | Page 38
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