Question

Help with Factoring Polynomials?

Answer 1

3x2y2 - 75

Answer 2

any idea?

Answer 3

This is what I did, I'm not sure if I did it right though...

Answer 4

Use the equation box please :P

Answer 5

= 3(x^2y^2 – 25)
= 3(xy+5) (xy– 5)

Answer 6

1. 3x2y2 - 75
= 3(X²Y² – 25)
= 3(XY + 5) (XY – 5)

Answer 7

same so correct

Answer 8

I also had to do... 2x3 + 54

Answer 9

\[3x ^{2}y ^{2}-75 = 3(x ^{2}y ^{2}-25) = 3[(xy + 5)*(xy - 5)]\]

Answer 10

kk how did you do?

Answer 11

= 2(x^2 + 27)
= 2(x + 3)(x² – 3x + 9) ?

Answer 12

2. 2x3 + 54
= 2(X² + 27)
= 2(X + 3)(X² – 3X + 9)

Answer 13

:)

Answer 14

more?

Answer 15

3 more, can you check them for me?

Answer 16

ofc go ahead i am here for that

Answer 17

3 rs - 2r - 3s + 2
= r (3s - 2) - 1 (3s – 2)
= (r - 1) (3s – 2)

Answer 18

3rs - 2r - 3s + 2
= r(3s - 2) - 1(3s – 2)
= (r - 1)(3s – 2)

Answer 19

last two?

Answer 20

Well, I actually didn't do this one because I got stuck /:

Answer 21

2x2 – 20x + 40

Answer 22

give me

Answer 23

can you try? i can wait

Answer 24

or you want me to show you?

Answer 25

Can you show it to me because I feel like I don't even know where to start lol

Answer 26

Divide everything by 2,
You have
x^2 - 10x + 20
Use quadratic formula now.

Answer 27

Check again, it's -10x.

Answer 28

yea true
2x2 – 20x + 40
= 2(x² – 10x + 20) -------- If you are in higher Std. further factors
= 2(x² – 10x + 20 + 5 – 5)
= 2[(x² – 10x + 25 – 5)]
= 2[(x – 5)² – (√5)²]
= 2[(x – 5 + √5][(x – 5 – √5]

Answer 29

thank you dharmaputra he is rigth!

Answer 30

annetta this is the answer

Answer 31

Using quadratic formula, the roots would be, -2765 and - 7.235

Answer 32

Ok, my last one... 21x2 + 31x + 4

Answer 33

-2.765*

Answer 34

21x2 + 31x + 4
= 21x² + 28x + 3x + 4
= 7x(3x + 4) + 1(3x + 4)
= (7x + 1)(3x + 4)

Answer 35

So the roots would be -1/7 and -4/3 ;)

Answer 36

voila ^^

Answer 37

Lol, @Dharmaputra_993 you're on a roll!

Answer 38

@Annetta_Martin @nader1 beats me to it every time :P

Answer 39

lool sorry :Pi just help her many time ^^

Answer 40

@nader1 I don't mind.

Answer 41

You guys are awesome, thank you! <3

Answer 42

^^

Answer 43

@Annetta_Martin @nader1 did all the work, but no problem!