The area of a rectangular painting is given by the trinomial x^2+2x-15. What are the possible dimensions of the painting? Use factoring.
2 answers
(x-3)(x+5) = ?
(x-3)(x+5)
well, if x were 4 It could be 9 x 1
or if x were 5 it could be 10 x 2
or if x were 6 it could be 11 x 3
or if x were 7 it could be 12 x 4
etc
well, if x were 4 It could be 9 x 1
or if x were 5 it could be 10 x 2
or if x were 6 it could be 11 x 3
or if x were 7 it could be 12 x 4
etc
1 answer