Question 5
SurdsSimplify 3√45 − 12√5 + 16√20, leaving your answer in surd form.
- A.29√5
- B.14√15
- C.12√15
- D.11√5
Show the answer and explanation
Answer: A (29√5)
Explanation
3√45 = 9√5 and 16√20 = 32√5, so 9√5 − 12√5 + 32√5 = 29√5.
Simplify 3√45 − 12√5 + 16√20, leaving your answer in surd form.
Answer: A (29√5)
3√45 = 9√5 and 16√20 = 32√5, so 9√5 − 12√5 + 32√5 = 29√5.