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4. Determinants
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Q7 of 127 Page 108

We know that determinant of A is calculated as

We have


⇒ 2(5) – 3(4) = x(5) – 3(2x)


⇒ 10 – 12 = 5x – 6x


⇒ -2 = -x


⇒ x = 2


Ans. The value of x is 2.


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Questions · 127
4. Determinants
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