Question

Find the value of x in determinant x+1 x-1 x-3 x+3 = 4 -1 1 3

Answer 1

Step-by-step explanation:

$x + 1x - 1x - 3 x + 3 = 4 - 113 \\ = - 2x + 3 = - 109 \\ = - 2x = - 109 - 3 \\ = - 2x = - 112 \\ = 2x = 112 \\ = x = \frac{112}{2} \\ = x = 56$