A= bmatrix x+y&y &x-y bmatrix , B= bmatrix 3 -2 bmatrix and C= bmatrix 4 -2 bmatrix . If AB=C, then what is A^2 equal to?

NDA 2017 Mathematics question

, and . If , then what is equal to?

Answer: (D)

gives and , i.e. and ; so , and $A =

Create a free account to read the complete working, and practise questions like this in a timed test.

Question ID VK-028603