Final answer:
To simplify the expression 8z * (-5) - 9z^2 in its simplest form, combine like terms, and perform the necessary operations. The result is -40z - 9z^2.
Step-by-step explanation:
To simplify the expression 8z * (-5) - 9z^2 in its simplest form, we need to combine like terms and perform the necessary operations.
Step 1: Multiply 8z and -5 to get -40z.
Step 2: Rewrite the expression as -40z - 9z^2.
So, the expression 8z * (-5) - 9z^2 in simplest form is -40z - 9z^2.