The simplified value of (\sqrt6+\sqrt10-\sqrt21-\sqrt35)(\sqrt6-\sqrt10+\sqrt21-\sqrt35) is

RRB Junior Engineer Stage 1 Model Papers 9

Question : 13 of 100

Marks: +1, -0

The simplified value of

(√6+√10-√21-√35)(√6-√10+√21-√35)

Solution:

[(√6-√35)+(√10-√21)][(√6-√35)-(√10-√21)]

=(√6-√35)^2-(√10-√21)^2

=6+35-2√6.√35-10-21+2√10.√21

=10-2√210+2√210=10

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