Subject
Quantitative Aptitude
Topic
Simplification
(9 + √80)1.5is equal to
(9 + √80)1.5is equal to
ক)
28 + 37√5খ)
38 + 35√5গ)
38 + 37√5ঘ)
38 + 17√5ঙ)
None of theseExplanation
(9 + √80) 1.5 = (9 + 4√5) 1.5 = (4+5+ 2 × 2 × √5) 3/2 = (22+(√5)2+2×2×√5) 3/2 [Using the formula: (a + b)2 = a2 + b2 + 2ab and (a+b) 3 =(a 3 +b 3 +3a 2 b+3ab 2 )] = [(2+√5) 2 ] 3/2 = (2+√5) 3 = 8 + 5√5 + 12√5 + 30 = 38+ 17√5Related questions
The difference of 1 (3/16) and its reciprocal is equal toWhat should come in place of question mark (?) in the following question?
(43% of 2750) – (38% of 2990) =?How many (1/8)s are there in 37 (1/2)?If then the value of x isFind the value -2+(-2)-{-(2)}-2Let a = (4 ÷ 3) ÷ 3 ÷ 4, b = 4 ÷ (3 ÷ 3) ÷ 4, c = 4 ÷ 3 ÷ (3 ÷ 4). The maximum value among the above three isWhat will come in place of the question mark (?) in the following equation?
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