Dr CK Lee’s Additional Mathematics Classes ( 91473612 or check out http://ascklee.org/)
1
Solutions to Exercise 3E (p. 91−92) from The Keng Seng, Loh Cheng Yee, Joseph Yeo and Ivy Chow’s New Syllabus Mathematics 2: 6th Edition (Textbook) Question 5 makes use of the identity: ( )( ) 5(a)
( )( )
( )( )
5(b)
( )( )
( )( )
5(c)
( )( )
( )( )
5(d)
( )( )
( )( )
5(e)
( )( )
( )( )
5(f)
( )( )
( )( )
5(g)
( )( )
( )( )
Dr CK Lee’s Additional Mathematics Classes ( 91473612 or check out http://ascklee.org/)
2
5(h)
( )( )
( )( )
5(i)
( )( )
( )( )
5(j)
( )( )
( )( )
6(a)
( )
( )
6(b)
( )
6(c)
( )
6(d)
( )
6(e)
( )
6(f)
Dr CK Lee’s Additional Mathematics Classes ( 91473612 or check out http://ascklee.org/)
3
( )
7(a)
( ) [ ( )][ ( )]
[ ][ ]
7(b)
( ) [ ( )][ ( )]
[ ][ ]
7(c)
( ) [( ) ][( ) ]
[ ][ ]
[ ][ ]
( )
7(d)
( ) ( )
[ ( )]
[ ]
[ ( )][ ( )]
( )( )
7(e)
( ) ( )
[ ( )]
( )
[( ) ][( ) ]
( )( )
7(g)
( )
( )( )