Question

What is the value of (1+a +a²)²?​

Answer 1

Answer:

Ans =7

Step-by-step explanation:

Given, (a + ) = 3 we know, (A + B)? = A? + B? + 2AB if we assume , A = a and B = 1/a then, 2 1 1 a a + = a + 1 a2 + 2a a (3)² = a² + 1 a2 +2 9 = a? + 1 + 2 9 – 2 = 7 = a²+ 1 a2 hence, a? + 1/a? = 7