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√98 + √8.

This can be expressed as, √98 + √8 = √(2 x 49) + √(2 x 4)

The square root of 49 is 7, and the square root of 4 is 2. So the expression now becomes :-

7√2 + 2√2 = (7 + 2)√2 = 9√2.

As √2 = 1.41421 (5dp) then the answer is :-

9 x 1.41421 = 12.72792

Use of a calculator gives 9.89949 + 2.82843 = 12.72792

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Q: What is the square root of 98 plus the square root of 8?
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