Test: Factorisation II - Challenging

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Question 1:   Factorise: 3pr2rq+3sp2qs
( 3p2q )( r+s )
( 3p+2q )( rs )
( 3r2s )( q+p )
( 3p+2q )( qp )
Question 2:   Factorise: 2qr+3pr8qs12ps
( 3p+4s )( r+q )
( 3p+2q )( r+4s )
( 3p+2q )( r4s )
( 3p+4s )( rq )
Question 3:   Factorise: 4 y 2 16
( y4 )( y+4 )
2( y 2 4 )( y 2 +4 )
( 2y4 )( y+4 )
4( y2 )( y+2 )
Question 4:   Factorise: 16 x 2 256
16( x4 )( x+4 )
( x16 )( x+16 )
4( x16 )( x+16 )
16( x16 )( x+16 )
Question 5:   Factorise: x 2 9x+20
( x2 )( x+10 )
( x+4 )( x5 )
( x3 )( x+6 )
( x4 )( x5 )
Question 6:   Factorise: x 2 2x15
( x+1 )( x15 )
( x4 )( x+5 )
( x2 )( x+6 )
( x+3 )( x5 )
Question 7:   Factorise: x 2 2x8
( x2 )( x+4 )
( x+1 )( x8 )
( x1 )( x+8 )
( x+2 )( x4 )
Question 8:   Factorise: 6 x 2 x12
( x1 )( 3x+12 )
( 2x6 )( 3x+2 )
( 3x+4 )( 2x3 )
( 3x3 )( 4x+4 )
Question 9:   Factorise: 28 x 2 27x10
( 2x3 )( 14x+4 )
( 2x5 )( 14x+3 )
( 7x+2 )( 4x5 )
( 7x5 )( 4x+2 )
Question 10:   Factorise: 36 x 2 +54x+10
( 7x+5 )( 8x+2 )
( 6x10 )( 12x+1 )
( 8x1 )( 7x+5 )
2( 3x5 )( 6x+1 )