Latest exam Aptitude Question SOLUTION: We are just starting Inverse matrices and I got it until I came to this problem. Will you show me how to solve it? A^-1=matrix (2 2) x+1, x+2 x+3, x+

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Previous Question: We are familiar with the identity (a+b)(a-b)=a^2-b^2. If A and B are n*n matrices, do we always have (A+B)(A-B)=A^2-B^2? If so, prove it. If not, give a counterexample, and give a Next Question: Ching, Alex, Ellen and Ashley are playing in a local golf tournament. For the first two days of the tournament both of Ching's sores were under -2. Alex had scores under par, or z

(#M40069538) EXAM Numerical Ability question Keep an EYE

We are just starting Inverse matrices and I got it until I came to this problem. Will you show me how to solve it?

A^-1=matrix (2 2)
x+1, x+2
x+3, x+4: Asked In exam (9 years ago); Unsolved; Is this Puzzle helpful? (0) (0) Submit Your Solution

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Previous Question: We are familiar with the identity (a+b)(a-b)=a^2-b^2. If A and B are n*n matrices, do we always have (A+B)(A-B)=A^2-B^2? If so, prove it. If not, give a counterexample, and give a Next Question: Ching, Alex, Ellen and Ashley are playing in a local golf tournament. For the first two days of the tournament both of Ching's sores were under -2. Alex had scores under par, or z

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