Question

Mark incorrectly evaluated the expression 4x+12-x to the power of 2 where is x-2. Identify and correct mark’s mistake.

Answer 1

Answer:

The value of $4x+12-x^2$ is 16.

Step-by-step explanation:

The given expression is $4x+12-x^2\ at\ x=2$.

Put x = 2 in the above expression as follows :

$4x+12-x^2=4(2)+12-(2)^2\\\\=8+12-4\\\\=16$

Hence, the final answer is 16.