Question

If a - b = 2 and ab = 3, then find the value of a + b?​

Answer 1

answEr -

(a-b)²= a²+b²-2ab

(a-b)²=a²+b²-2ab

2²=a²+b²-2x3

4=a²+b²-6

a²+b²=10

(a+b)²=a²+b²+2ab

(a+b)²=10+2x3

(a+b)²=16

(a+b)=√16=4

•°• a+b = 4

done