If XA=(I-A)^2 where X, A and I are 2x2 matrices and A=bmatrix1 & 2\\1 & 4bmatrix, then |X|= Option 1: 2|A| Option 2: 4/|A| Option 3: |A|^2 Option 4: 2/|A|

The answer is '4/|A|'. View full solution:

CUET Mathematics - If XA=(I-A)^2 where X, A and I are 2x2 matrices and A=bmatrix1 & 2\\1 & 4bmatrix, then |X|= | PYQs + Solutions

CUET Mathematics 2026 22nd May Shift 1

Algebra

Medium

core

$2|A|$

$\frac{4}{|A|}$

$|A|^2$

$\frac{2}{|A|}$

✅ Correct Option: 2

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