Question

If (a - b)2 = 4 and ab = 3 , what is the value of (a? + b2 )?​

Answer 1

Answer:

(a-b)² = 4

=> a² + b² - 2ab = 4

=> a² + b² -2(3) = 4

=> a² + b² -6 = 4

=> a² + b² = 4+6

=> a² + b² = 10

Answer 2

Answer:

given :

( a - b )² = 4

ab = 3

( a - b )² = a² + b² - 2ab

4 = a² + b² - 2ab

4 + 2ab = a² + b²

4 + 2(3) = a² + b²

10 = a² + b²