Confused about a step in the working of cubic graph x intersections

[gaunt jay]

i got the question right, but is it correct that the ^2 on the first bracket just disappears when i get the answer of that intersection using null factor law?

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[gaunt jay]

also, since that cubic has a squared value, i am confused on how that has 3 points of intersection, yet what i have been taught in class is that if a cubic has a squared value then it only has 2 x intercepts

[weak violet]

It's not a cubic though?

[gaunt jay]

the question said its a cubic

thats why im super confused

[weak violet]

The highest power term is an x^4

[gaunt jay]

and if you graph it on a graphics calculator its a cubic

[weak violet]

Huh

When I graphed it, it looks like a quartic

[gaunt jay]

huh

we didnt learn abt quartics

at all

im in chapter 7 of grade 11 methods

havent even learnt that shit in specialist yet lol

[weak violet]

Do you have the image of the original question

[gaunt jay]

nvm it didnt say cubic

im stupid

mb

[weak violet]

Np

[gaunt jay]

so thats just a quartic?

[weak violet]

Yeah

[gaunt jay]

ohhhhhhhhh

thats why im confused

we havent learned anything abt quartics yet

[weak violet]

It follows the same rules

[gaunt jay]

ok thanks

so is that why it doesnt tap the x axis when it has a squared value?

[weak violet]

Which squared value

[gaunt jay]

like

yk how if cubics have a squared value in the equation

it taps the x axis

[weak violet]

Yes

[gaunt jay]

and only has 2 x intercept

since its a quartic is that why it has 3 x intercepts

[weak violet]

Yes

[gaunt jay]

ohhh ok

thanks

[weak violet]

It does tap the x axis

[gaunt jay]

thats what tripped me up alot

i was confused how it had 3 x intercepts

tyty

[weak violet]

Np

[gaunt jay]

+close

[wild moth]

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