CUET Mathematics - If A is a square matrix and I is an identity matrix of same order such that A^2 = A, then (I + A)^3 - 8I is equal to | PYQs + Solutions

CUET Mathematics 2025 22 May Shift 1

Algebra

Medium

common

A - I

7(A - I)

✅ Correct Option: 3

Related questions:

21 May Shift 1

If A and B are symmetric matrices of same order, then which of the following are correct?

(A) AB-BA is a skew-symmetric matrix.

(B) AB+BA is a skew-symmetric matrix.

(D) AB+BA is a symmetric matrix.

Choose the correct answer from the options given below:

15 May Shift 2

If $A = \begin{bmatrix} 2 & -3 \\ -4 & -7 \end{bmatrix}$ and $2A^{-1} = kI - A$ , where K is a real number and I is the identity matrix of order 2, then the value of K is:

13 May Shift 1

If $A = [a_{ij}]_{3×3}$ where $a_{ij} = \begin{cases} (-1)^{i+j} - 1, & i = j \\ (-1)^{i+j}, & i \neq j \end{cases}$ then the value of $A + A^T$ is:

CUET Mathematics 2025 22 May Shift 1 PYQs

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