Use the on-site calculator to solve for this.
I am not sure if this calculator can map onto functions.
8x^2 - 24 = 3x^2 - 9
Add 24 to both sides and subtract 3x^2 from both sides.
You should be able to take it from there.
Subtract 500 from both sides, divide 5 from both sides & square root!
Add 55 to both sides.
Divide 5 from both sides.
Take the square root of both sides.
That's it.
3x^2 + 2 = 11 - x^2
Add x^2 to both sides and subtract 2 from both sides.
Now, it should be easy to solve for x [you will need to square root both sides eventually].
5x^2 + 500 = 844.45
Subtract 500 from both sides.
Divide 5 from both sides
Finally, take the square root of both sides.
Now, you have the value of x.
If you're talking about how to create a negative sign on the calculator, you use the $$\pm$$ key.
Simply plug in x = -1 into 5x - (5+2x):
5(-1) - (5 +2(-1))
You can solve it easily now.
I feel like something is missing here...
