Answer:
= 5(2 + √3)
Step-by-step explanation:
2(1 + √3)² + (1 + √3) + 1 =
= 2(1 + 2√3 + 3) + 1 + √3 + 1
= 2 + 4√3 + 6 + 1 + √3 + 1
= (2 + 6 + 2) + √3(4 + 1)
= 10 + 5√3
