Problem: If t=1−42​1​, then t equals
Answer Choices:
A. (1−42​)(2−2​)
B. (1−42​)(1+2​)
C. (1+42​)(1−2​)
D. (1+42​)(1+2​)
E. −(1+42​)(1+2​)
Solution:
1−42​1​=1−42​1​⋅1+42​1+42​​=1−2​1+42​​⋅1+2​1+2​​=−(1+42​)(1+2​).