Question

6√216 +√625 - √900

class 9th RD Sharma​

Answer 1

Answer:

Step-by-step explanation:

8 √216 - √625 - 7 √32 + √361

=  8 √[2x2x2x3x3x3] -√[5 x 5 x 5 x 5]  - 7 x √[2 x 2 x 2 x 2 x 2 ] + √[19 x 19]

now we will make pairs of 2 and these pairs will only come out of root

8 x 2 x 3√[2 x 3] - 5 x 5 - 7 x 2 x 2√[2] +  19

= 48√6 - 25 - 28√2 + 19

= 48√6 -28√2  -6

= 48 x 2.449 - 28 x 1.414 - 6

= 117.552 - 39.592 - 6

= 71.96 [ approx ]

HOPE IT HELPS ...

Answer 2

Answer:

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