If u+v=7 and uv=12, find u-v
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Answered by
2
1
Step-by-step explanation:
u+v=7
4+3=7
uv=12
4×3=12
u-v=?
4-3=1
u=4v=3
Answered by
0
Answer: 1 or -1 u can write both the answer
Step-by-step explanation: u+v=7
uv=12
then,u=7-v...(i)
and u=12/v...(ii)
on comparing eq (i) and (ii)
we get,7-v=12/v
7v-v^2=12
7v-v^2-12=0
by solving it , we get two values for "v" by quadiratic equation = 4 and 3 , we can use any value either 4 or 3 i am using both for u...
by,v=4...
u=3 ...
then u-v=3-4=-1
if, v=3
then u=4
then,u-v=1
thank u
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