If a + b = 5 and ab = 6, Find the value of a2 + b2
10
11
12
13
The value of ( 999 ) 2 is
998001
998011
998021
998031
(a2 - b2 ) 2 =
a2 - 2ab + b2
a4 - 2ab + b4
a4 - 2a2b2 + b4
a4 + 2a2b2 + b4
Express 1 - 2y + y 2 as a perfect square
( 1 + y ) 2
( -1 + y ) 2
( 1 - y ) 2
None of these
Express 81 x2 + 90 xy + 25 y2 as a perfect square
( 5x + 9y ) 2
( 5x - 9y ) 2
( 9x + 5y ) 2
( - 9x + 5y ) 2
( a + 1 ) 2 =
a2 + 2a + 1
a2 + a + 1
a2 + 1
a2 + 2a + 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 + b = 6 and a2 + b2 = 20. Find the value of ab.
6
8
9
Express 9m2 - 6m + 1 as a perfect square.
( 1 - 3m ) 2
( 1 + 3m ) 2
( 3 - m ) 2
( 3 m - 1 ) 2
Express 9x2 + 12 xy + 4y2 as a perfect square.
( 3x - 2y ) 2
( 3x + 2y ) 2
( 2x + 3y ) 2
( 2x - 3y ) 2