Question

How to answer two with a grpahing tool of some sort please help

Answer 1

We can solve the question using inequalities:

a)

`-x^2+4x-4≤0`

We can factor the equation using the notable product:

`-(x-2)^2≤0`
`(-1)(-(x-2)^2)≤0(-1)`

with the exponent 2, the x value can take any real number.

Hence, the solution is (-∞, ∞)

b)