kelsiee24
26.02.2021 •
Mathematics
The area of a rectangular back yard can be represented by x2 – 9x + 14 square meters. If the width of the yard is (x – 2) feet, what is the length?
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Ответ:
(x-7)
Step-by-step explanation:
Recall that the area of a rectangle A whose length is l an d width is w
= l * w
Given that the area is
= x2 – 9x + 14
Factorize
x2 – 9x + 14 = x2 – 7x - 2x + 14
= x(x - 7) -2(x - 7)
= (x - 2)(x - 7)
Given that the width of yard is (x – 2) then the length will be (x-7)
Ответ: