Question

Determine binomials to represent the length and width of the rectangle, and then determine the dimensions of the rectangle if x=11 cm. Area is x^2-19x+90

Answer 1

A binomial just means it has two terms. It's something like
x+5 or 4x-20
anything like that.

Answer 2

So for this problem, you just need two binomials that will multiply to get x^2-19x+90
Try factoring.

Answer 3

I tried, but I couldn't really get it :( I tried -10 and +9 but that didn't work

Answer 4

You're clooose =) Keep trying.

Answer 5

OH um -15 and +6 ?

Answer 6

so (x-15)(x+6)

Answer 7

?

Answer 8

(x-15)(x+6) would FOIL to
x^2 +6x -15x -90
= x^2 -9x -90
Notice that you end up with -90 instead of +90 since you did one positive and one negative. =(

You were a lot closer with 9 and 10.

Answer 9

oh frig :(

Answer 10

OH -10 and - 9 ?

Answer 11

Try foiling it out on your own and see if that works.

Answer 12

yes :)

Answer 13

Cool! Good job =)