Deformations of quantum hyperplanes

We consider the quantum hyperplanexⁱx^j =q_ijx^jxⁱ(i,j = 1..n) and define and consider deformations of the formxⁱx^j =q_ijx^jxⁱ + _{k k}^ijx^k + ^ij, where _k^ij and ^ij are complex numbers. We prove that for genericq_ijno nontrivial deformations exist forn 3.