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Bill and Tia are trying to evaluate the expression 5x to the power of 2 when x=3. They both agree that 3 should be substituted for x. Tia says they should multiply 3 and 5, and then square the result. Bill says they should square 3 and then multiply by 5. Who is correct and why?

Respuesta :

Answer: Bill is correct

Step-by-step explanation

To evaluate the expression 5x^2 when x=3, we substitute x with 3 and then perform the operations according to the order of operations (PEMDAS/BODMAS).

The expression is 5x^2, where x = 3:

Substitute x with 3: 5 * (3^2)

Square 3: 5 * 9

Multiply by 5: 45

So, the correct order of operations is to square 3 first and then multiply by 5. Bill is correct in this case!

You're welcome !! :3

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