Question

if (a-b) =


5 and ab =2 fond the value of (a-
b)²​

Answer 1

Answer:

(a-b)²= 17

Step-by-step explanation:

(a-b)² = a² -2ab +b² (1)

Given: a-b = 5  (2)

           ab = 2    (3)

Therefore, Substituting values (2),(3) in (1),

(5)² = a² -2(2) +b²

25 = a² + b² -4

21 = a² + b² (4)

So, (a-b)² = (a²+b²) -4

Substituting the value of (4),

(a-b)² = 21 - 4

(a-b)² = 17

Answer 2

Answer is
17 mark me as the brainliest