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Question

If A=[5xy6], B=[4y45]and A+B=I, then the values of x and y respectively are
  1. 4,4
  2. 4,4
  3. 4,4
  4. 4,4

A
4,4
B
4,4
C
4,4
D
4,4
Solution
Verified by Toppr

The correct option is A 4,4
Since, A+B=I
[1x+yy41]=[1001]
On comparing, we get
x+y=0,y4=0
x=4,y=4.

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