Question

what is the value of a²+b²
the if (a- b) =9 andab=lo​

Answer 1

Answer:

101

Step-by-step explanation:

Given,

a - b = 9

ab = 10

To find : a² + b² = ?

Formula : -

( a - b )² = a² + b² - 2ab

9² = a² + b² - 2 ( 10 )

81 = a² + b² - 20

a² + b² = 81 + 20

a² + b² = 101