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Question

For what values of x and y are the following matrices equal?

A=2x+12y0y2-5y, B=x+3y2+20-6

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Solution

​As the given matrices A and B are equal, therefore, their corresponding elements must be equal. Comparing the corresponding elements, we get

2x + 1 = x + 3 2y = y2 + 2
0 = 0 y2 − 5y = −6

On simplifying, we get
x = 2, but there is no common value of y for which A and B are equal.

Hence, A and B cannot be equal for any value of y.

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