Question

Evaluate the expression 7x²y-32

What is the value of the expression when x = 3, y = 5, and 2 = -4?

Answer 1

The expression 7x²y evaluates to 315 when x = 3 and y = 5.

Step-by-step explanation:

To evaluate the expression 7x²y-32 when x = 3, y = 5, and 2 = -4, you need to substitute these values into the expression.

First, substitute the value of x into the expression:

7(3)²(5) - 32 = 7(9)(5) - 32 = 315 - 32 = 283

So, when x = 3, y = 5, and 2 = -4, the value of the expression 7x²y-32 is 283.

We are asked to evaluate the expression 7x²y when given the values for x and y. To solve this, we will substitute x with 3 and y with 5.

First, we calculate x²:

• x = 3
• x² = 3² = 9

Now we can evaluate the expression:

• 7x²y = 7 × (x²) × y
• 7x²y = 7 × 9 × 5
• 7x²y = 63 × 5
• 7x²y = 315

Therefore, the value of the expression 7x²y when x = 3 and y = 5 is 315.