Question

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

Plsss help mw

Answer 1

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

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.