Question

If (x-5) (x+3) =0 and x is the length of the rectangle then which value of x will you consider? why?​

Answer 1

Answer:

Step-by-step explanation:

X=5

Because length cannot be -ve

Answer 2

Answer:

First one that is x minus 5

Step-by-step explanation:

Now either X minus 5 or X plus 3 equals 0. If we take X plus 3 to be 0. Then

$x + 3 = 0 \\ x = 0 - 3 = - 3$

and if we take X minus 5 to be zero, then

$x - 5 = x = 0 + 5 = 5$

Now if X is the length of a rectangle, then it obviously has to be a natural ( counting) number as we have to count the length of a rectangle. out of -3 and 5, 5 is a natural number not -3 as we can't use negative numbers for counting. We can't say there are -3 books in the bag. but we can say that there are 5 books in the bag.