Question

MEDAL! Write -2x^2(-5x^2+4x^3) in standard form (ax^2+bx+c=0)

Answer 1

@bibby Any clue? :(

Answer 2

nope, sorry

Answer 3

@ganeshie8

Answer 4

@jim_thompson5910

Answer 5

if you distribute the -2x^2 through, what do you get?

Answer 6

also, there seems to be a discrepancy

the result won't be in the form ax^2 + bx + c

Answer 7

Got it. -8x^5+10x^4

Answer 8

Can you help me with one more thing @jim_thompson5910

Answer 9

it's a weird question. -8x^5 is not ax^2

Answer 10

you are correct and sure, go ahead

Answer 11

Okay. What is the degree of the polynomial that generates that given data?
x= -6, -3, 0, 3,6
y= 846, 108, 0, -126, -918

(it's a chart, while x=-6, y=846 etc.)

Answer 12

I'll have to graph this, one sec

Answer 13

okay! Thanks for your help in advance! Alg 2. is kicking my butt.

Answer 14

ok this is definitely a tough problem, but using a calculator I was able to do a polynomial interpolation to get \(\Large y = -4x^3 - x^2 - 3x\)

I used geogebra

Answer 15

So it would be a cubic model?

Answer 16

correct

Answer 17

Thank you so much!! I will definitely recommend you! (;

Answer 18

you're welcome