How to solve
( 2√2 + 7√7 ) + ( 13√2 - 4√7 )
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firstly open the bracket
=2sqrt2 + 7sqrt7 + 13sqrt2 - 4sqrt7
=15sqrt2 + 3sqrt7
=3 (5sqrt2 + sqrt7)
=3 (5×1.41 + 2.64)
=3 (7.05 + 2.64)
=3 (9.69)
=29.07
Hint :- sqrt means square root..
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