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Please Solve RD Sharma Class 12 Chapter 4 Algebra of Matrices Exercise Very Short Asnwer Question 40 Maths Textbook Solution.

Answers (1)

Answer: a= 8

Hint: Here, we use basic union concept of matrix

Given: \begin{bmatrix} a-b &2 \\ 5 & b \end{bmatrix}=\begin{bmatrix} 6 &5 \\ 2 & 2 \end{bmatrix}    Find a


Here, Both side has 2\times 2 matrix

So we can write

b=2       .....(i)


a-2=6   [From eqn (i)]

\therefore a=8

So, value of a is 8.

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