Question 1
SurdsEvaluate √20 × (√5)3
- A.10
- B.20
- C.25
- D.50
Show the answer and explanation
Answer: D (50)
Explanation
√20 = 2√5 and (√5)3 = 5√5, so the product is 2 × 5 × √5 × √5 = 10 × 5 = 50.
Evaluate √20 × (√5)3
Answer: D (50)
√20 = 2√5 and (√5)3 = 5√5, so the product is 2 × 5 × √5 × √5 = 10 × 5 = 50.