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Chapter 1: Q64. (page 10)

Evaluate each expression

-25

Short Answer

Expert verified

Expression -25 results into -5

Step by step solution

01

- Meaning of a

The symbol is used to denote square root of a number.

Thus a denotes square root of 'a'

02

- Find a whole number whose square is 25

Since,52=25

So, a whole number whose square is 25 is 5

03

- Simplify -25

Since, square of 5 is 25

So, square root of 25 is 5, 25=5

Multiply both sides by -1

鈭�1脳25=鈭�1脳5鈭�25=鈭�5

Thus, value of -25 is -5

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