Question 8
SurdsExpress 2/(3 − √7) in the form a + √b, where a and b are integers.
- A.6 + √7
- B.3 + √7
- C.3 − √7
- D.6 − √7
Show the answer and explanation
Answer: B (3 + √7)
Explanation
Multiply top and bottom by 3 + √7: 2(3 + √7)/(9 − 7) = 3 + √7.
Express 2/(3 − √7) in the form a + √b, where a and b are integers.
Answer: B (3 + √7)
Multiply top and bottom by 3 + √7: 2(3 + √7)/(9 − 7) = 3 + √7.