a+b=7and a-b=3 then find the value of a+b=7 and a-b=3 then find the value of ab
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Answered by
4
Answer:
Step-by-step explanation:
I think this is how it is done
a+b = 7 .....eq 1
a-b =3.....eq 2
a+b =7
a-b = 3
...............
= 2a=10( eliminating both b & -b)
= a= 5
From eq 1
5+b=7
b = 7-5
=2
Therefore, a=5 & b=2
And ab= 10
Answered by
1
Answer:
ab=10 is a correct answer
Step-by-step explanation is given in attachment
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