And another one...what is this?

[Guest]

Here is another one. I have no idea what the directions are even talking about. Any pointers?

Find b^2-4ac and the number of real solutions to each equation,

x^2+6x+9=0

v^2=3v+5

 

[stapel]

You should have memorized the Quadratic Formula, as your book clearly expects you to know it. So make a flash card (or learn the song, or whatever), and get it down -- cold -- before your test.

(The "b² - 4ac" bit is the "discriminant", the part inside the square root.)

For an illustration of the relationship between the discriminant and the number of solutions, try here. (Scroll down to the bottom to find the table you're looking for.)

Eliz.

 

[Guest]

I have to tell you I am NOT liking quadratic equations much.

I am a bit confused. Shocking I know, but this is my question at this point.

I have two more sections on quadratic equations to cover. Are they all done the same. I am guess no, because that would be the simple answer right?

I am still working on the original one I sent in, but I am wondering if there is more than one way to do this?

Solve the following equations using the quadratic equation
8q^2+2q-1=0

p^2+6p+4=0

-x^2-3x+5=0

Find all real and imaginary solutions to each equation using the method of your choice.

4x^2+25=0

5w^2-3=0

q^2+6w-7=0

 

[stapel]

When they tell you to "solve using the Quadratic [Formula]", then, no, there is no other way to do it. You have to use the method specified.

But it's just a formula, so plug-n-chug. No thinking required. :wink:

Eliz.