Polynomial Arithmetic

[ornate storm]

I just kind of forgot how to do it.
please help

[cobalt wharf]

1. Wait patiently for a helper to come along.
2. Once someone helps you, say thank you and close the thread with:

+close

3. Feel free to nominate the person for helper of the week in #helper-nominations
4. Do not ping the mods, unless someone is breaking the rules.
5. If you're happy with the help you got here, and the server overall, you can contribute financially as well:

[sullen seal]

3x^3-5x^2+18x

[ornate storm]

it didnt work

[sullen seal]

Did u try to factor it?

[ornate storm]

what is factoring again?

[sullen seal]

(X-3)(X-2)

[inner saffron]

probably didn't work because it should be -15x^2

you multiply the thing in the front by every term inside the parenteheses

thats how distributive property works

3x(a + b + c) = 3xa + 3xb + 3xc

[ornate storm]

hey rizzly

[final marten]

just multiply 3x to each term
3x^3 - 15x^2 + 18x

check my arithmetic cuz im bad at it

[ornate storm]

sorry new question now.

[neon junco]

yea it’s basically the same question as above

you take 3n^2 and multiply it to each of the numbers at the top

[ornate storm]

would 3n^2 x 4n^2 be 12n^2 or 12n^4

[neon junco]

12n^4

if I have n*n times n*n how many n do I have

[ornate storm]

nn x nn

?

[neon junco]

that’s 4 ns

so you want 12n^4

[ornate storm]

cool

[ornate storm]

sooooo

would 3n^2 X -1 just be -3n^2?

help!

[neon junco]

whats 3n^2 * -5n

[inner saffron]

i love negative area rectangle

[neon junco]

same

[ornate storm]

wait

so what is it then?

because obviously it cant be negative?

[inner saffron]

we just pretend it can be negative

follow lengthxwidth to the grave

[ornate storm]

then why didnt it work?

[inner saffron]

because you need to multiply 3nn by every term

it seems like you forgot to multiply the 3 by the middle term

[ornate storm]

not seperataly?

could explain in further detail

[inner saffron]

.

[ornate storm]

wait!

I GOT IT

IT WAS MISSING A 1

[neon junco]

why pinmg smh

turn it off

like if youre not talking to the person turn it off

if i am addressing you i leave it on

[inner saffron]

lazy

[neon junco]

lmao ok

[burnt mountain]

Area of rectangles are l*w so 3n²(4n²-5n-1).

Which becomes 12n⁴-15³-3n²

[burnt mountain]

Yep