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√49×⁸ in simplified form a. a√24.5. b. 7×⁸. c. 7×⁴. d. 7 √5×⁸​

Sagot :

Nanaleoninidn

Answer:

Find the square root.

49−−√

49−−√ indicates the positive square root of 49 .

Since 7×7 is 49 , 49−−√=7 .

Find the square root.

−25−−√

−25−−√ indicates the negative square root of 25 .

Since 5×5 is 25 , −25−−√=−5 .

Step-by-step explanation:

Example:

Estimate 69−−√ to the nearest whole number.

First list some perfect squares and look for the whole numbers near 69 .

1, 4, 9, 16, 25, 36, 49, 64, 81, 100, ...

Observe that 69 lies between the perfect squares 64 and 81 . That is, 64<69<81 .

Now find the square root of each number.

64−−√<69−−√<81−−√8<69−−√<9

So, 69−−√ is between 8 and 9 .

Since 69 is much closer to 64 than to 81 , the best whole number estimate is 8 .