Question

Help . The area of a rectangluar desk is given by the trinomial d^2 - 7d - 18. what are the possible dimensions of the desk? use factoring

Answer 1

Find two numbers that multiply to -18 and add to -7

Answer 2

9 and -2? @jim_thompson5910

Answer 3

close, -9 and 2

Answer 4

-9*2 = -18

-9+2 = -7

Answer 5

so

d^2 - 7d - 18

factors to

(d-9)(d+2)

Answer 6

from the factorization, you can see the dimensions

Answer 7

@jim_thompson5910 thank you :)

Answer 8

np