63 : 27 :: 59 : 42 :: 96 : 45 :: 56 : ?
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63 : 27 :: 59 : 42 :: 96 : 45 :: 56 : ?
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Answer:
the answer is 33
Step-by-step explanation:
6 + 3 × 3 = 27
5 + 9 × 3 = 42
9 + 6 × 3 = 45
and the last one that is missing
5 + 6 × 3 = 33
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Step-by-step explanation:
is given that ,
x + 1/x = 7 -----(
We know the algebraic identity,
a³ + b³ + 3ab ( a + b ) = ( a + b )³
Or
a³ + b³ = ( a + b )³ - 3ab( a + b
x³ + 1/x³ = (x + 1/x )³- 3 × x ×1/x(x + 1/x )
= ( x + 1/x )³ - 3( x + 1/x )
= 7³ - 3 × 7
= 7( 7² - 3 )
= 7 ( 49 - 3 )
= 7 × 46
= 322