Question

If a² + b^2 =25 and ab = 12, find the value of:
(a) a+b
(b) a-b

Fast please... ​

Answer 1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

a² + b² = 25 and ab = 12

(a)

(a + b)² = a² + b² + 2ab

=> (a + b)² = 25 + 2(12)

=> (a + b)² = 25 + 24

=> (a + b)² = 49

=> (a + b) = 7

(b)

(a - b)^2 = a² + b² - 2ab

=> (a - b)² = 25 - 2(12)

=> (a - b)² = 25 - 24

=> (a - b)² = 1

=> a - b = 1

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