Final answer:
The value of the expression -3x²y²z when x = 1, y = -2, and z = 5 is calculated by substituting these values into the expression, resulting in a final value of -60.
Step-by-step explanation:
The question asks for the value of the expression -3x²y²z when x = 1, y = -2, and z = 5. To find the value of this expression, we simply substitute the given values into the expression and calculate it step by step.
First, we'll substitute x, y, and z into the expression:
-3(×1)²(×-2)²(×5)
Calculating the squares gives us:
-3(1)²(-2)²(5)
-3(1)(4)(5)
Now, we'll multiply the numbers:
-3 × 1 × 4 × 5 = -3 × 4 × 5
Which simplifies to:
-3 × 20 = -60
Therefore, the value of the expression -3x²y²z given the values of x, y, and z is -60.