SOLUTION: Hi I have several questions that I completely don�t understand and need help on. 1. Solve by completing the square y^2-6y=16 2. Determine the nature of the

Question 52064: Hi I have several questions that I completely don�t understand and need help on.

1. Solve by completing the square y^2-6y=16

2. Determine the nature of the solutions of 3z^2+2z-1=0

3. Solve Using the quadratic formula 3p^2-3p-4=0

4. Solve 2x^2-5x-12=0

I would really appreciate if you could help me with these problems as soon as possible because I have a test and I need some help so it would be nice if you could respond before 7 am tomorrow morning.
Thanks,
Jake
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!

What I did was take 1/2 of the coefficient of y, square it, and add it to
both sides

check

OK
------------------

If b^2-4*a*c turns out to be positive, then the solutions are real
If it's negative, the solutions are imaginary
-------
3p^2-3p-4=0

answer
------
2x^2-5x-12=0

So the solutions are x = 4, x = - 3/2

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