Question

If a+b =3 and a-b=1 then find the value of ab.​

Answer 1

Answer:

(a+b)^2=a^2+b^2+2ab

(a-b)^2=a^2+b^2-2ab

by using these identities

Answer 2

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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