Express 9x2 + 12 xy + 4y2 as a perfect square.
( 3x - 2y ) 2
( 3x + 2y ) 2
( 2x + 3y ) 2
( 2x - 3y ) 2
If a + b = 6 and a2 + b2 = 20. Find the value of ab.
6
8
9
10
Express 9m2 - 6m + 1 as a perfect square.
( 1 - 3m ) 2
( 1 + 3m ) 2
( 3 - m ) 2
( 3 m - 1 ) 2
Express 1 - 2y + y 2 as a perfect square
( 1 + y ) 2
( -1 + y ) 2
( 1 - y ) 2
None of these
(a - b ) 2 =
a2 + b2
a2 - b2
a2 + 2ab + b2
a2 - 2ab + b2
Express 81 x2 + 90 xy + 25 y2 as a perfect square
( 5x + 9y ) 2
( 5x - 9y ) 2
( 9x + 5y ) 2
( - 9x + 5y ) 2
Express x2 + x + 1/4 as a perfect square :
( x + 1/2 ) 2
( 2x + 1 ) 2
( x + 2 ) 2
( x - 1/2 ) 2
If a + 1/a = 4, Find the value of a2 + 1/a2.
12
13
14
If a2 + 1/a2 = 14, find the value of a4 + 1/a4
192
194
196
198
Express 9a2 + 60 a + 100 as a perfect square.
( 3a + 10 ) 2
( 3 + 10a ) 2
( 3a - 10 ) 2
( 10a + 3 ) 2
