Powers and Roots Practice Test 2

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Question : 21 of 40

Marks: +1, -0

If

√2=1.414

, then the value of

√8+ 2 √32 -3 √128 +4√ 50

is:

8.876
8.526
8.484
8.426

Solution:

Given,

√2=1.414

,
Then

√8+ 2 √32 -3 √128 +4√ 50

=2√2+8√2-24√2+20√2

=6√2=6×1.414=8.484

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