Powers and Roots Practice Test 3

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Question : 17 of 40

Marks: +1, -0

If

√5= 2.2361

,

√3 =1.7321

, then

1/{√5-√3}

equals:

2
1.9841
1.984
1.98

Solution:

√5= 2.2361

and

√3 =1.7321

Then,

1/{√5-√3}×{√5+√3}/{√5+√3}

={√5+√3}/{5-3}

={2.2361 +1.7321}/2= 1.9841

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