Factorise 2x^2+ 3√5x + 2 .
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2x² + 3√5x + 5
=2x² + 2√5 x+ √5x+5 ( by using splinting method )
=2x( x +√5 ) + √5 (x +,√5)
= (2x +√5)(x+√5) =0
= x =-√5/2 and x =- √5
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