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Chapter 1: Q16. (page 56)

Evaluate the expression when r=4ands=6.

localid="1649217077278" 4r+s2

Short Answer

Expert verified

The value of the expression is52.

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

To evaluate the expression 4r+s2, substitute 4 for r and 6 for s in the expression and then simplify further by evaluating the exponent as shown below,

4r+s2=4(4)+(6)2=4(4)+36

03

Step-3 – Multiply the numbers

Now multiply the first two numbers to get,

4r+s2=16+36

04

Step-4 – Add the numbers

Now to simplify further, add the numbers to get

4r+s2=16+36=52

Thus, the value of the expression is 52.

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