Write the general term in the expansion of (a² − b)⁸.

We have (a² − b)⁸ = (a² + (−b))⁸.

The general term of the above binomial expansion is given by:

T_r−1 = ⁸C_r(a²)^8−r(−b)^r

⇒ T_r−1 = (−1)^r8C_ra^16−2rb^r