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Simplify 4 √[(390695T− 8)½)]
Question 1
Report
Simplify 4 √[(390695T− 8)½)]
1/T
2T
5/T
T/5
Answer Details
4√(390625T − 8)½
[(390625T − 8)½]¼
[((390625)½ × T − 8)½]¼
(√ 390625 × T − 4 )¼
(625 × T −¼)¼
(54 × T −4)¼
= (54)¼ × (T − 4 )¼
= 5 × T − 1
= 5 × 1/T
= 5/T
Read lesson note on Surds (radicals) (WAEC)
Surds (radicals)
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