Let P= bmatrix 3&-1&-2 2&0& 3&-5&0 bmatrix , where R. Suppose Q = [q_ ij ] is a matrix satisfying PQ = kI_3...

Question

Let P= bmatrix 3&-1&-2 2&0& 3&-5&0 bmatrix , where R. Suppose Q = [q_ ij ] is a matrix satisfying PQ = kI_3 for some non-zero k R. If q_ 23 =- k 8 and |Q|= k^2 2 , then ^2+k^2 is equal to ——

Accepted Answer

17

JEE Main 2021 Mathematics question

Solution