Answer:
x = 2 and x = -2
Step-by-step explanation:
The quadratic formula of a quadratic of the form ax² + bx + c is:
x = or x =
Here, our equation is: 3x² - 18 = -6. Let's move all the terms to one side:
3x² - 12 = 0
a = 3 and c = -12. Notice that since there's no x term, b = 0.
Plug these into the quadratic formula:
x =
or
x =
So, x = 2 and x = -2.
Answer:
F(-3) = -14
Step-by-step explanation:
Substitute -3 for x.
2x - 8
2(-3) - 8 = -6 - 8 = -14
The steps to finding the inverse is writting:
- y = x + 5
- x = y + 5 (applying a change of variables).
- y = x - 5 (isolating y).
<h3>How to write the inverse of the given function?</h3>
Here we have the function:
y = f(x) = x + 5
Basically, to find the inverse we need to isolate x. The first step is writing
y = x + 5
Now let's do a <em>"false change of variables"</em> of x by y, so we get:
x = y + 5
Now we need to isolate y again:
y = x - 5
This is the inverse of the function f(x), we have:
If you want to learn more about inverse functions:
brainly.com/question/14391067
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