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Post by
322702
This post was from a user who has deleted their account.
Post by
Jubilee
You can use page 360 to show that both of those are not polynomials, using the rule in the box in the middle of the page that says the exponents are non-negative integers. In the first case it's not an integer, and in the second it's negative.
Post by
Monday
Heya Jubi, what's that in your sig?
Post by
Kristopher
You can use page 360 to show that both of those are not polynomials, using the rule in the box in the middle of the page that says the exponents are non-negative integers. In the first case it's not an integer, and in the second it's negative.
Negative because it turns out to be p^-2(1/4)?
Post by
Jubilee
The airspeed velocity of an unladen swallow ;)
Post by
322702
This post was from a user who has deleted their account.
Post by
Jubilee
5p4 + 3.5p - (5/p2) + 16
→ 5p4 - (5 * 1/p2) + 3.5p + 16
→ 5p4 - 5p-2 + 3.5p + 16
Post by
Monday
The airspeed velocity of an unladen swallow ;)
Cool =)
Post by
Kristopher
Uh, now I have to find the product of (x+3)(x+4)(x+2) I'm not sure if I've ever seen a question like that, to be honest... Is it so simple that, having gone through complicated (to me) maths, I'm overlooking it?
Post by
Jubilee
It keeps cutting my new signature off even though it clearly says 37 characters left =(
Post by
Jubilee
Uh, now I have to find the product of (x+3)(x+4)(x+2) I'm not sure if I've ever seen a question like that, to be honest... Is it so simple that, having gone through complicated (to me) maths, I'm overlooking it?
Do you know how to FOIL? If so do that first to two of those, and then apply the principle of FOILing to what you have left :)
(a+b)(c+d)=ac+ad+bc+bd
(a+b)(c+d+e)=ac+ad+ae+bc+bd+be
Post by
asakawa
The airspeed velocity of an unladen swallow ;)
African or European?
Post by
Jubilee
The airspeed velocity of an unladen swallow ;)
African or European?
It accounted for either ;)
Post by
Kristopher
Uh, now I have to find the product of (x+3)(x+4)(x+2) I'm not sure if I've ever seen a question like that, to be honest... Is it so simple that, having gone through complicated (to me) maths, I'm overlooking it?
Do you know how to FOIL? If so do that first to two of those, and then apply the principle of FOILing to what you have left :)
10x + 24?
Post by
Jubilee
Uh, now I have to find the product of (x+3)(x+4)(x+2) I'm not sure if I've ever seen a question like that, to be honest... Is it so simple that, having gone through complicated (to me) maths, I'm overlooking it?
Do you know how to FOIL? If so do that first to two of those, and then apply the principle of FOILing to what you have left :)
10x + 24?
Nope! See the spoiler I put up above.
Post by
Kristopher
Uh, now I have to find the product of (x+3)(x+4)(x+2) I'm not sure if I've ever seen a question like that, to be honest... Is it so simple that, having gone through complicated (to me) maths, I'm overlooking it?
Do you know how to FOIL? If so do that first to two of those, and then apply the principle of FOILing to what you have left :)
10x + 24?
Nope! See the spoiler I put up above.
Ok doing that I got (x + 3)(x + 4)(x + 2)
2x + 4x + 3x + 12
(9x + 12)(x + 2)
10x + 18x + 12x + 24
40x + 24
I still think I am doing it wrong.
Post by
Jubilee
(x + 3)(x + 4)(x + 2) = * (x + 2)
FOIL
(x + 3)(x + 4)
F
irst terms = x * x = x2
O
utside terms = x * 4 = 4x
I
nside terms = 3 * x = 3x
L
ast terms = 3 * 4 = 12
(x + 3)(x + 4) = x2 + 4x + 3x +12 = x2 + 7x + 12
Now apply the same principle of FOIL by multiplying each term in the first group consecutively with each term in the second.
(x2 + 7x + 12)(x + 2)
x2 * x = x3
x2 * 2 = 2x2
7x * x = 7x2
7x * 2 = 14x
12 + x = 12x
12 * 2 = 24
(x2 + 7x + 12)(x + 2) = x3 + 2x2 + 7x2 + 14x + 12x + 24 = x3 + 9x2 + 26x + 24
Post by
deathbyte
(x + 3)(x + 4) doesn't make
2x + 4x + 3x + 12
it should be in a
(x + x + x) format
I did that wrong.. meant (ax2 + bx + c}
Post by
Kristopher
Dammit.... thanks for the help, anyway.
Post by
Jubilee
Dammit.... thanks for the help, anyway.
Did you see my post? I just want to make sure, because it got stuck at the end of the last page.
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