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Mathematics
Problem
A rectangular wooden board has area
15
x
2
+
11
x
−
14
cm
2
15x^{2}+11x-14\,\text{cm}^2
15
x
2
+
11
x
−
14
cm
2
. If its width is
3
x
−
2
cm
3x-2\,\text{cm}
3
x
−
2
cm
, what is its length in centimetres? a)
15
x
+
7
15x+7
15
x
+
7
b)
5
x
+
7
5x+7
5
x
+
7
c)
5
x
−
7
5x-7
5
x
−
7
d)
5
x
+
4
5x+4
5
x
+
4
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