Question

P(x)=2x^ 3 +2x^ 2 -5+2y,,1/2 , 1 -2​

Answer 1

Answer:

Step-by-step explanation:

Given that,

p ( x ) = 2x³ + 2x² - 5x + 2

p ( 1/2 ) = 2 ( 1/2 )³ + 2 ( 1/2 )² - 5 ( 1/2 ) + 2

= 2 ( 1/8 ) + 2 ( 1/4 ) - 5/2 + 2

= 1/4 + 1/2 - 5/2 + 2

= ( 1 + 2 - 10 + 8 ) / 4 (∵ lcm of 4, 2, 2 is 4)

= 1/4

p ( 1 ) = 2 ( 1 )³ + 2 ( 1 )² - 5 ( 1 ) + 2

= 2 + 2 - 5 + 2

= 1.

p ( - 2 ) = 2 ( - 2 )³ + 2 ( - 2 )² - 5 ( - 2 ) + 2

= 2 ( - 8 ) + 2 ( 4 ) + 10 + 2 ( ∵ - × - = + )

= - 16 +8 + 10 + 2

= 4.