Question

.No.11. The area of a rectangular paper is 4 – x2. Then its dimensions are: A) 2 + x, 2 - x B) 4 + x, 4 - x C) 2, x D) 4 + x, 2 - x​

Answer 1

$4-x^2\\=2^2 - x^2\\=(2+x)(2-x)$

The dimensions are (2+x) and (2-x)