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Chapter 1: Q11. (page 17)

Evaluate the expression when x=4andy=2

localid="1648624739300" x2鈭�y

Short Answer

Expert verified

The value of the expression is14.

Step by step solution

01

Step-1 – Order of operations

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

Step-2 – Evaluate the exponent

In order to evaluate the given expression, first substitute 4 for x and 2 for y and then expand the exponent as shown below

x2鈭�y=42鈭�2=16鈭�2

03

Step-3 – Subtract the numbers

Now to simplify further, subtract the resulting numbers to get

16鈭�2=14

Thus, the value of the expression is 14.

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