Determinants
If |[x, 2], [3, 4]| = 10, then x equals
Select the correct option:
Solution
4
- Expansion: Expand the 2×2 determinant on the left:
- (x)(4)−(2)(3)=10
- Simplify Equation:
- 4x−6=10
- Algebraic Solution:
- 4x=16
- x=4.
- Result: The value of x is 4.
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About This Question
- Subject
- mathematics
- Chapter
- matrices and determinants
- Topic
- determinants
- Difficulty
- Easy
- Year
- 2025
This easy difficulty mathematics question is from the chapter matrices and determinants, covering the topic of determinants. It appeared in the 2025 exam. Practice this and similar questions to strengthen your understanding of matrices and determinants concepts.
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