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K

khaiproqn81

$2x^3-x^2+5x+3=2x^3+x^2-2x^2-x+6x+3 \\ = x^2(2x+1)-x(2x+1)+3(2x+1) = (2x+1)(x^2-x+3)$
 
K

khaiproqn81

$2x^3-5x^2+8x-3 = 2x^3-x^2-4x^2+2x+6x-3 \\ =x^2(2x-1)-2x(2x-1)+3(2x-1) =(2x-1)(x^2-2x+3)$
 
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