Question

find det and like it​

Answer 1

Answer:

x=0

hope so it will be useful to you dear

Answer 2

Step-by-step explanation:

Given matrix,

A = $\left[\begin{array}{ccc}0&2&1\\-2&0&-2\\-1&x&0\end{array}\right]$

Det.(A) = |A| = 0(0×0 - x(-2)) - 2(-2(0) - (-1)(-2)) + 1(-2(x) - (-1)(0))

⇒ |A| = 0 - 2(-(2)) + 1(-2x)

⇒ |A| = 4 - 2x

∴ |A| = 4-2x

Let, |A| = 0

⇒ 4 - 2x = 0

⇒ 4 = 2x

⇒ x = 2

∴ x = 2

HOPE THIS WOULD BE HELPFUL FOR YOU