Test: Factorisation II - Normal

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Question 1:   Factorise: 3m n 2 +6 m 2 n
2mn( m+3n )
3 m 2 n( 2m+1 )
9 m 3 n 3
3mn( n+2m )
Question 2:   Factorise: 3 m 3 n 2 6 m 2 n+9mn
m 2 n( 3mn6m+9 )
3mn( m 2 n2m+3 )
3 m 2 n 2 ( m2n+3 )
6 m 2 n 2
Question 3:   Factorise: ab+b+a+1
Cannot be factored
b( a+1 )+a+1
( a1 )( b+1 )
( a+1 )( b+1 )
Question 4:   Factorise: x 2 1
( x1 )( x+1 )
( x1 )( x1 )
x( x1 )
( x+1 )( x+1 )
Question 5:   Factorise: m 2 n 2
( m+1 )( n+1 )
( m+n )( mn )
( m+n )( nm )
( m+1 )( n1 )
Question 6:   Factorise: x 2 25
( x5 )( x+5 )
( x1 )( x+25 )
( x25 )( x+25 )
( x+5 )( x+5 )
Question 7:   Factorise: y 4 625
( y 2 25 )( y 2 +25 )
( y 2 625 )( y 2 +1 )
y( y 3 625 )
( y5 )( y+5 )( y 2 +25 )
Question 8:   Factorise: x 2 +2x+1
x( x+3 )
( x1 )( x2 )
( x+1 )( x+1 )
( x+1 )( x+2 )
Question 9:   Factorise: x 2 +x2
( x1 )( x2 )
( x+1 )( x2 )
( x2 )( x+3 )
( x1 )( x+2 )
Question 10:   Factorise: x 2 7x+12
( x3 )( x+4 )
( x2 )( x6 )
( x3 )( x4 )
( x2 )( x+6 )