If a+b =3 and a-b=1 then find the value of ab.
Answers
Answered by
3
Answer:
(a+b)^2=a^2+b^2+2ab
(a-b)^2=a^2+b^2-2ab
by using these identities
Answered by
1
Answer:
2
Step-by-step explanation:
a + b = 3
a - b = 1
2 a = 4
a = 2
b = 1
ab = 2
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