3ab –5a + 2ab – a = ……………………………………………………………………………………………………

c2 + 5c – 7c + 3 c2 = ……………………………………………………………………………………………….

– ( 5a – 3 ) – 2b = …………………………………………………………………………………………………

6 ( 4a – 3b) = ……………………………………………………………………………………………………………..

5 ( x – 7 y) = ……………………………………………………………………………………………………………….

( 4 + x ) ( a – 7 ) = ………………………………………………………………………………………………………

( 16x2 + 4 x ) : ( -4) = ……………………………………………………………………………………………………

h*) ( x + 1) ( x - 2 )( x + 5) = …………………………………………………………………………………………………….

i*) ( x - 4y ) 2 = ……………………………………………………………………………………………………………………….
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