Question 23
IndicesIf 2a = √64 and b/a = 3, evaluate a2 + b2.
- A.250
- B.160
- C.90
- D.48
Show the answer and explanation
Answer: C (90)
Explanation
√64 = 8 = 23, so a = 3 and b = 9. Then a2 + b2 = 9 + 81 = 90.
If 2a = √64 and b/a = 3, evaluate a2 + b2.
Answer: C (90)
√64 = 8 = 23, so a = 3 and b = 9. Then a2 + b2 = 9 + 81 = 90.