Factorizing

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Factorise 

1. 4x+4y= 4 (x + y)

2. 3x-3y= 3 (x - y)

	P ( q + r ) A ( c + f ) F ( g - h ) A ( b + 2 )  b ( c - 3 ) 6 ( b - a )
	3 ( p + q ) X ( 4 - y ) A ( cg - 2 ) P ( q - r + 2 ) Pq ( r + t ) Xy ( w - z )
	X ( 3y - 4 ) P ( 6q - 5y ) X ( 3 + y - z) 2x ( 2 - 3y ) 3x ( y - 2p ) Ab ( 4c - 5d )
	7xy ( 3z + 5p )  X ( y + 1 ) Ac ( d + 1 ) Qr ( 2p - 1 ) Y ( 6x - 1 ) 2x ( y - 1 )
	X ( 3x + 5 ) 3x ( 2 - x )
	X2 ( 2 - x ) X2 ( 1 + x )
	3x2 ( 2 + 3x ) 2 ( 2x2 + 1 )
	X ( 3x2 - 1 ) X ( x2 + x - 1 )

What is factorizing ?

Factorizing is when you find what to multiply together to get an expression.