Question 11
Algebraic ExpressionsIf S = √(t2 − 4t + 4), find t in terms of S.
- A.S − 2
- B.S2 + 2
- C.S2 − 2
- D.S + 2
Show the answer and explanation
Answer: D (S + 2)
Explanation
t2 − 4t + 4 = (t − 2)2, so S = t − 2 (taking t ≥ 2) and t = S + 2.
If S = √(t2 − 4t + 4), find t in terms of S.
Answer: D (S + 2)
t2 − 4t + 4 = (t − 2)2, so S = t − 2 (taking t ≥ 2) and t = S + 2.