The variables x, y, and z represent polynomials where x = a, y = 3a – 5, and z = a2 + 2. what is x2y – z in simplest form?

2a2 – 5a – 2
3a3 – 6a2 – 2
–3a3 – 2
–3a2 – 2

The simplest form of is

Option 2 is correct.

Step-by-step explanation:

Given: The variables X, Y, and Z represent polynomials.

We need to find

Substitute the value of X, Y and Z into expression

Combine the like term

Simplest form is

Hence, The simplest form of is

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)