Hello there.
Answer: ⇒⇒⇒⇒-29
Step-by-step explanation:
Remove parenthesis.

Subtract the numbers.

Hope this helps!
Thank you for posting your question at here on brainly.
-Charlie
Answer: 
Step-by-step explanation:
I hope you mean y = x² - 12 and not y = 2x - 12.
You switch the y and x variables:
x = y² - 12
And solve for y:
x + 12 = y²

1) (solve for Y 1st)
-4y=16
y=-4
slope=0 y-inter= -4
2)(solve for X 1st)
6x=12
x=2
slope=undefined y-inter= none