#algebra questions
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- Collect similar terms.
- There are different ways to do this. The simplest is to find two side lengths, then multiply them.
- Domain is the set of x-values where the function is defined, range is the set of output values of the function.
- To find the asymptote, look at behaviour at infinity. If it behaves like a line, find its equation.
this is for the first one right ?
For all.
ohh
No.
which part is wrong ?
for the second one 60 i think?
Quite a lot. Try again.
Note that the signs in the first bracket won't change.
ohh alright
That's correct.
How are you getting minus in the second place?
Ohh.
Wait, hold on.
I misread the problem, one sec.
alright
Yeah, that's correct. Sorry about that.
What threw me off is that they started labelling signs from the second one, not the first one.
ohhhh no prob
okay so for the next one
are these right ?
i left the last two blank bc im not sure
No.
its not y = -3 right ?
It is.
is this right or is it still incorrect
Better, but domain is still wrong.
is the range right
Yes.
Yeah, that's correct.
yayy okay
Now, the limits at infinities.
and how do i figure out the other questions
To do that, look at what the value of the function becomes for x -> +∞ and for x -> -∞.
∞
-∞
Well, +∞ is correct for x -> -∞.
-∞ is wrong for x -> ∞?
-3 is for x -> ∞?
Yes.
Oh man, these questions...
- This expression is a prime quadratic, meaning it cannot be factored further as it does not have any factors other than 1 and itself.
and its prime
I kinda hate how this is taught, to be honest.
sorry 😭
Like, I don't see a point in learning 9001 different ways of solving quadratics when just three are enough.
Well, let's try...
yup
Yeah, first one is irreducible, I agree.
Well, (4) contains square root as the leading and constant coefficients.
There is an option like that.
- This expression starts and ends with perfect squares, and the middle term is twice the product of the square roots of the first and last terms.
is that right ?
perfect square trinomial
Yeah.
So far, we got this.
What about (5)?
Ohh, wait.
There are two groups of answers...
Aw man.
Yes
for 4 its perfect square trinomial and This expression starts and ends with perfect squares, and the middle term is twice the product of the square roots of the first and last terms.
Is this what they mean us to do?
and for one its prime and This expression is a prime quadratic, meaning it cannot be factored further as it does not have any factors other than 1 and itself.
yes
is 5 Difference of Two Squares ?
Yes. And?
this expression contains two perfect squares and has a subraction sign in the middle
im not so sure
is it the last one?
No, the third row.
Well, that won't work for (3), as it does at least have a common factor.
greatest common factor only?
Yes. And the one in the third row. So, this.
Only (2) and (6) are left.
To be honest, it's easier to do that by exclusion, since I have no idea what they are talking about in the second-to-last statement...
wait also i have a question
so the type of quadratic that would be the blue line right ?
Yes.
oh wait
the last one is grouping right ?
Well, while I hate unnecessary grouping, I'd rather use it for (2). I don't see how you can do it in (6).
Probably? As I said, no idea what's happening on the sixth row.
Great! You're welcome.
@dreamy hemlock
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