Question

solve the above expression​

Answer 1

p(x)= 2x³ - x²- 13x - 6

P(-2)= 2(-2)³ - (-2)² -13(-2) - 6

= (-16) - 4 + 26 - 6

= -26 + 26

= 0

$Therefore,$

(x+2) is a factor of P(x)

P(x) = (x+2) (2x² - 5x - 3)

= (x + 2) (2x² - 6x + x - 3)

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

x  = -2, -1/2, 3