Question

verify (x=1) is a factor of p(x) = 2x^3 +x^2 -2x - 1​

Answer 1

Step-by-step explanation:

Given,

x = 1

p ( x ) = 2x³ + x² - 2x - 1

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

= 2 ( 1 ) + 1 - 2 - 1

= 2 + 1 - 2 - 1

= 2 - 2 + 1 - 1

p ( 1 ) = 0

Therefore, x = 1 is a factor of p ( x ) = 2x³ + x² - 2x - 1.

Hence verified.