332,157 views
12 votes
12 votes
The area of a rectangular door is given by the trinomial x2 – 14x + 45. The door's width is

(x - 9). What is the door's length?

User Xmnboy
by
2.4k points

1 Answer

16 votes
16 votes
Length = (x - 5)

Step-by-step explanation:
Area
=
Width × Length

x
2

14
x
+
45
=
(
x

9
)
× Length

Length =
x
2

14
x
+
45
(
x

9
)


Length =
(
x

5
)
(
x

9
)
(
x

9
)


Length =
(
x

5
)
(
x

9
)
(
x

9
)


Length =
(
x

5
)
User Leang Socheat
by
2.5k points
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