Question

Will medal and fan!!

Can someone explain to me how to do Quadratic Trinomials?

Answer 1

@peak

Answer 2

i suck at quadratic trinominals. sry

Answer 3

hola

Answer 4

hey

Answer 5

u espanic

Answer 6

meda

Answer 7

u espanic si

Answer 8

i know a little

Answer 9

And its okay @peak

Answer 10

amigos

Answer 11

lol its a prank im not rally Spanish but i know a little

Answer 12

@Christian_10_

Answer 13

i could tell xD

Answer 14

how

Answer 15

You weren't very good at speaking it and i believe you spelled a couple words wrong lol

Answer 16

Hello

Answer 17

lol im such a retart

Answer 18

hey

Answer 19

and don't say that

Answer 20

What kind of questions? Quadratic --> highest power of x is x^2, Trinomials ---> three terms added.

Answer 21

One of my homework questions was 3r^2-6r-45

Answer 22

ok

Answer 23

Who keeps on giving me medals

Answer 24

im stupid

Answer 25

\[3r^2-6r-45\] it's got three term, and 2 is the highest power of r, so what do you need to do with it?

Answer 26

I think its set up like this

(3r-9)(3r-5)

Answer 27

When you multi back out... 3r*3r = 9r^2. so that's not right. try and factor the three out of everything first. i.e. 3(---------------)

Answer 28

3(r-9)(r-5)?

Answer 29

im sorry im not good at math /.\

Answer 30

So to factor out the 3, you want \[3*1r^2+3*2r+3*15=3(r^2+2r+15)\]

Answer 31

opps, negatives! \[3(r^2-2r-15)\]

Answer 32

so that's the answer?

Answer 33

now you want \[(r+a)(r+b)\] such that a*b=-15 and a+b = -2.

Answer 34

half way

Answer 35

to find a*b = -15, you can find all the ways to multiply to get -15...

-15*1
-5*3
-3*5
-1*15

Answer 36

and then check if any give a+b=-2.... and -5+2 = -2!!

Answer 37

putting it all together \[3(r-5)(r+2)\]

Answer 38

hope that makes sense, gtg.

Answer 39

thank youu!!!!!!

Answer 40

np