हिंदी

Simplify the following: sqrt(147) – sqrt(27) + sqrt(75) – sqrt(48) - Mathematics

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प्रश्न

Simplify the following:

`sqrt(147) - sqrt(27) + sqrt(75) - sqrt(48)`

सरल रूप दीजिए
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उत्तर

`sqrt(147) - sqrt(27) + sqrt(75) - sqrt(48)`

Step 1: Break each term into factors of perfect squares

`sqrt(147) = sqrt(49.3) = 7sqrt(3)`

`sqrt(27) = sqrt(9.3) = 3sqrt(3)`

`sqrt(75) = sqrt(25 xx 3) = 5sqrt(3)`

`sqrt(48) = sqrt(16 xx 3) = 4sqrt(3)`

Step 2: Substitute back

`sqrt(147) - sqrt(27) + sqrt(75) - sqrt(48)`

= `7sqrt(3) - 3sqrt(3) + 5sqrt(3) - 4sqrt(3)`

Step 3: Combine like terms

`(7 - 3 + 5 - 4)sqrt(3) = 5sqrt(3)`

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अध्याय 1: Rational and Irrational Numbers - MISCELLANEOUS EXERCISE [पृष्ठ १८]

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बी निर्मला शास्त्री Mathematics [English] Class 9 ICSE
अध्याय 1 Rational and Irrational Numbers
MISCELLANEOUS EXERCISE | Q 6. (i) | पृष्ठ १८
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