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Question
Factorise : x2 + 3x + 2 + ax + 2a
Sum
Solution
x2 + 3x + 2 + ax + 2a
= x2 + 2x + x + 2 + ax + 2a
= x( x + 2 )+1( x + 2 ) +a( x + 2 )
= ( x + 2 )( x + a + 1 )
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