Question 39
SurdsSimplify (1 + 2√3)2 − (1 − 2√3)2.
- A.0
- B.8√3
- C.13
- D.2 − 4√3
Show the answer and explanation
Answer: B (8√3)
Explanation
(1 + 2√3)2 = 13 + 4√3 and (1 − 2√3)2 = 13 − 4√3. The difference is 8√3.
Simplify (1 + 2√3)2 − (1 − 2√3)2.
Answer: B (8√3)
(1 + 2√3)2 = 13 + 4√3 and (1 − 2√3)2 = 13 − 4√3. The difference is 8√3.