Question

need help:
the area of a rectangle is
20x*squared*−27x−8
The length is
4x+1
What is the width?

Answer 1

20x^2 - 27x - 8 = (4x + 1)(5x - 8)

If this is an 8th grade problem, chances are that the length is 4x + 1, not 4x - 1. That way, the problem would come out neatly: the width would be 5x - 8.

Can you check this?

Answer 2

let's factor
20x^2-27x-8=
We need factors of -160 which add to -27
we know we have 4x and 1
-32 and +5
factor 20
5 and 4 and -8


factor -32 4 and -8
-32 +5=-27
-32 4 and -8
(4x+1)*(5x-8)
The width is 5x-8
We could also have divided 20x^2-27x-8
4x-1

Answer 3

ok, thanks. So the answer is 4x - 1?

PS this is an eight grade question

Answer 4

no it is 5x - 1

Answer 5

The width is 5x-8

Answer 6

oh, ok. thanks

Answer 7

welcome