Question

Find the square of ( 2x + 1/x +1)

Answer 1

Answer:

4x² + 1/x² + 5 + 6/x

Step-by-step explanation:

(2x + 1/x + 1)²                                          {(a+b+c)²= a²+b²+c²+ 2ab+ 2bc+ 2ac}

(2x)² + (1/x)² + 1² + 2*2x*1/x + 2*1/x*1 + 2*1*2x

4x² + 1/x² + 1 + 4 + 2/x + 4/x

:. 4x² + 1/x² + 5 + 6/x

Hope it helps :)