Ok so you will be finding the perimeter of this rectangle. The formula is P(perimeter)=2L(length) + 2W(width)
so the length is 48 and the width is 1/2 of 48, and we all know that 1/2 of 48 = 24 right? so in the formula is says 2L so we will take 48 and multiply it by 2 and get 96. The same way with the width. 24 times 2 = 48 so then we add them together and get 144. Therefore the perimeter and the length of fringe that she will use (or how ever you say it) will be 144 inches.
Let denote a constant (a number, rather than a variable like .)
Let denote an expression about (for example,
By the factor theorem, if is a factor of , then . In other words, if all mentions of in the expression are replaced with , then the expression should evaluate to zero.
is equivalent to . That is: .
Replace all mentions of in by to get:
.
That should evaluate to zero. Therefore: . Solve for to get .