Question

factorise the cubic polynomial 2x3 +qx2+10x+3

Answer 1

this isn't correct

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Answer 2

Step-by-step explanation:

2x^3 + 9x^2 + 10x + 3

= 2x^3 + 6x^2 + 3x^2 + 9x + x + 3

= 2x^2 ( x + 3 ) + 3x ( x + 3 ) + 1 ( x + 3 )

= ( x + 3 ) ( 2x^2 + 3x + 1 )

= ( x + 3 ) ( 2x^2 + 2x + x + 1 )

= ( x + 3 ) [ 2x ( x + 1 ) + 1 ( x + 1 ) ]

= ( x + 3 ) ( x + 1 ) ( 2x + 1)

#shaf❤️