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Chapter 1: Q26. (page 18)

Evaluate the expression when x=3,鈥�y=4,鈥塧苍诲z=5

localid="1648720586058" (x+y)2鈭�3.6

Short Answer

Expert verified

The value of expression is45.4.

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 – Substitute the values

To evaluate the expression(x+y)2鈭�3.6 , substitute 3 for x and 4 for y, and simplify further using the order of operations as shown below,

(x+y)2鈭�3.6=(3+4)2鈭�3.6=(7)2鈭�3.6=49鈭�3.6

03

Step-3 – Subtract the numbers

To simplify further, subtract the resulting numbers to get

(x+y)2鈭�3.6=(3+4)2鈭�3.6=(7)2鈭�3.6=49鈭�3.6=45.4

So, the value of the expression is 45.4.

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