Question

find the value of polynomial p(x) =2+x+2xsquare-xcube at x=2​

Answer 1

P(2) = 2 + 2 + 2(2)^2 - (2)^3
= 4 + 8 - 8
= 4

Answer 2

Given : p(x) = 2  + x  + 2x² - x³  

To Find : Value at x  = 2

Solution :

p(x) = 2  + x  + 2x² - x³  

x = 2

p(2) = 2 + 2  + 2(2)² - 2³

2³ = 8

2² = 4

⇒ p(2) = 2 + 2  + 2(4) - 8

⇒ p(2) = 4  +8 - 8

⇒ p(2) = 4

p(2) = 4  

Value of p(x) = 2  + x  + 2x² - x³   at x = 2 is 4

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