Question

Can anyone answer the 12 question..

Answer 1

Answer:

a = 2, b = 1

Step-by-step explanation:

12.

Given : (a + b√3)² = 7 + 4√3

⇒ (a + b√3)² = 3 + 4 + 4√3

⇒ (a + b√3) = √3 + 4 + 4√3

⇒ (a + b√3) = √(√3 + 2)²

⇒ (a + b√3) = (√3 + 2)

⇒ (a + b√3) = (2 + √3)

⇒ (a + b√3) = (2 + 1√3)

On comparing both sides, we get

a = 2, b = 1

Hope it helps!