Question

Okay, so I was given four different equations and I was only allowed to use one of the following formulas for each equation ONCE. (Square Root Property, Complete The Square, Zero Product Rule, and Quadratic Formula)
Now, I already solved each equation, but I need to know if I did it correctly.
1.) 4x^2 - 27 = 0....I chose Square Root Rule.
2.) 4x^2 - 8x - 5 = 0....I chose Complete The Square.
3.) 4x^2 - 8x - 12 = 0....I chose Zero Product Rule.
4.) 4x^2 - 9x - 7 = 0.....I chose Quadratic Formula.

Answer 1

not quite sure what your spose to be doing with these ....

Answer 2

For each equation, I am suppose to solve them with one of the formulas I chose. For example, for the first one, I chose the Square Root Rule, I solved it, and my answer was x = +- 27/2.

Answer 3

i spose you worked the others by the processes that you chose to work them with then? if so, then i really dont see a wrong method to apply to them

Answer 4

completing the square reduces to the quadratic formula, one is the proof of the other so they are the same thing ... and zero product wold imply being able to factor

Answer 5

Well, I chose the Square Root Rule for the first equation because the x variable in the problem is squared. I chose Complete The Square for the second equation because the equation looks like x^2+bx+c=0 and the b is even. I chose the Zero Product Rule for the third equation because it's easy to factor. I chose the Quadratic Formula for the fourth equation because it was last one left. I'll put up my work in a second, but I want to know if I solved them correctly. I'm not always good with simplifying.

Answer 6

methodology seems fine, lets see what your solutions are :)