Question

The area of a rectangular desk is given by the trinomial la1" title=" d^{2} -7d-18" alt=" d^{2} -7d-18" align="absmiddle" class="latex-formula">.what are the possible dimensions of the desk? Use factoring.

Answer 1

D^2-7d-18


d -9


d +2


(d-9)(d+2)



d-9=0 d=9


d+2=0 d=-2