3. The expression 2x2 + 9 means a. the sum of 2 times a number squared and 9.
b. the product of 2 times a number squared and 9.
c. the sum of 9 and the square of 2 times a number.
d. the sum of 2 and 9 times the square of a number.
e. the product of the square of 2 times a number and 9.

To diagonalize an nxn matrix a means to find an invertible matrix p and a diagonal matrix d such that a pdp d p ap or [1 3 dh epap 3 let a=-3 -5 -3 3 3 1 step 1: find the eigenvalues of matrix a "2's" step 2: find the corresponding eigenvectors of a step 3: createp from eigenvectors in step 2 step 4 create d with matching eigenvalues.