1.

Factorise the following expression X2+12x+27

Answer»

X² + 12X + 27

=> x² + ( 9 + 3 ) X + 27

=> x² + 9X + 3X + 27

=> x( x + 9 ) + 3( x + 9 )

=> ( x + 9 ) ( x + 3 )




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