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Chapter 1: Q21. (page 9)

Find the value of each expression

21.-232+8

Short Answer

Expert verified

Value of-232+8 is -34

Step by step solution

01

- Order for simplification 

To evaluate any expression involving more than one operation, follow the below order of operations:

  • First evaluate expressions inside grouping symbols like parentheses ( ) or brackets [ ].
  • Evaluate the exponents.
  • Perform Multiplication and division from left to right.
  • Perform addition and subtraction from left to right.
02

- Simplify expression inside grouping symbol

To evaluate the value of the given expression, first simplify the expression inside the parenthesis by expanding the exponent and adding 8 with it as shown below

鈭�232+8=鈭�29+8=鈭�217

03

- Multiply with 17

Now, to simplify further divide the numbers to get

-217=-34

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Find the value ofabniflocalid="1646746061753" n=3,a=2000,b=-15

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