Question

Consider the statement
$P\left(n\right):$ "$2n^2+4n-8$ is negative. "
Then which of the following options are correct?

• A. Both $P(-2)$ and $P\left(2\right)$ are false
• B. $P(-2)$ is true but $P\left(2\right)$ is false
• C. Both $P(-2)$ and $P\left(2\right)$ are true
• D. $P(-2)$ is false but $P\left(2\right)$ is true

Answer 1

The correct option is B $P(-2)$ is true but $P\left(2\right)$ is false

$P(-2)=-8$ and $P\left(2\right)=8$