# If $$S = { \sqrt{t^2-4t+4}}$$, find t in terms of S.

Question 11
A

S + 2

B

S - 2

C

S2 + 2

D

S2 - 2

##### Explanation

$$S = { \sqrt{t^2-4t+4}}$$
$$S = { \sqrt{(t-2)(t-2)}}$$

S = t - 2

t = S + 2

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