The variables x, y, and z represent polynomials where x = a, y = 3a – 5, and z = a^2 + 2. what is x^2y – z in simplest form?
a. 2a^2 – 5a – 2
b. 3a^3 – 6a^2 – 2
c. –3a^3 – 2
d. –3a^2 – 2

 Option 'b' is correct.

Step-by-step explanation:

Since we have given that

We need to calculate :

So, we put the values of X, Y, and Z in the expression, then it becomes,

Hence, Option 'b' is correct.

after simplifying it i got: -36.25 as my answer. hope that !