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do u knwo how to complete the square? or do u factor it?

lets factor its easy

its under my quadratic function lesson so idk

what 2 numbers when you multiply them =18 and when u add them =9?

is there a number for that?

6*3=18
6+3=9

ohhh

so is the answer 9
?

finding the zeros is a long and complicated way to find the minimum

umm well we can complete the square

but i dont think she knows that

use the vertex formula

when doing the vertx thing... is the second number the minimum?

in your case it is \(-\frac{9}{2}\) replace \(x\) by \(-\frac{9}{2}\) to find the minimum

minimum means minimum value of \(y\) so it is the second coordinate, not the first

so yes, what you said, the second number is the minimum.

can i just plug it into my graphing calculator to get the anwser ?

completing the square is for suckers, unless of course you are solving a quadratic equation

last i heard minimum value was in a calculus class o.O i never knew it was in algebra too

It's in Algebra 2.

You can use a calculator to solve it

hahah its in math 11 here in canada

\[(-\frac{9}{2})^2+9\times (\frac{-9}{2})+18\] then a calculator if you need one

you turn math up to eleven in canada? mine only goes up to ten

So for this, you get x=-4.5 and y=-2.25

sooo many numbers ... ahhhhh!!! >_< what about TI-83 plus?

hahaha grade 11 math lol

so taking the derivative and equating to zero is another story?

It'll be exactly the same basically I think.

Yes lgb haha

they give us this freshman yr. imma senior now tryna make it up.. sucks :/

thanks everyone