Q7 of 127 Page 108

Find values of x, if


We have

We know that determinant of A is calculated as


⇒ 2(1) – 4(5) = 2x(x) – 4(6)


⇒ 2 – 20 = 2x2 - 24


⇒ -18 = 2x2 – 24


⇒ 2x2 = -24 + 18


⇒ 2x2 = 6


⇒ x2 = 6/2


⇒ x2 = 3


x = �√3


Ans. The value of x is �√3


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