Question

3. Find (-4x)^2
4. Multiply and simplify (x-3)(x+2)
5.Factor out the largest possible common factor 3xyz+8xy^2
6. Factor as much as possible: x^2+10x+25

Answer 1

3 would be 16x^2 correct?

Answer 2

4 would be x^2-1

Answer 3

3) 16x^2

4) x^2-x-6

5) xy(3z+8y)

6) (x+5)^2 or (x+5)*(x+5)

Answer 4

#4 is not as simple as says x*x + (-3+2) = x^-1

are you familiar with FOIL?

Answer 5

Yeah sort of

Answer 6

robz8 don't just give out answers

it's against the code of conduct

Answer 7

sorry

Answer 8

I dont' understand how you do 5. I came up with a different answer for that

Answer 9

I see where I messed up with 4 by using foil.

Answer 10

to factor x^2+10x+25, you look for two numbers that

a) multiply to 25 (last term)

AND

b) add to 10 (middle coefficient)

Answer 11

the two numbers are 5 and 5

5+5 = 10
5*5 = 25

so this means x^2+10x+25 factors to (x+5)(x+5)

Answer 12

so you have 3xyz+8xy^2

both those terms have "xy" in common about them, so you can 'factor' them out

Answer 13

since you have a copy of the same factor, you can condense (x+5)(x+5) into (x+5)^2

Answer 14

oh sry, saw the wrong one...

Answer 15

I got 2x(yz+4y^2

Answer 16

2 is a factor of 8, but not of 3

Answer 17

so 3xyz+8xy^2 doesn't factor to 2x(yz+4y^2)

Answer 18

I'm sorry its not supposed to be 3 its supposed to be 2*

Answer 19

ah ok

Answer 20

2xyz+8xy^2

2x(yz+4y^2)

that's a good start, but you can factor more

Answer 21

you can pull out y as well

Answer 22

what do you get when you do that

Answer 23

2x(z+4y)

Answer 24

when you pull out the y, it goes outside the parenthesis

Answer 25

so you should have this

2xy(z+4y)

Answer 26

Ohhh ok

Answer 27

as a check, you can distribute back through and you should get the original expression as a result

Answer 28

THanks that helped alot

Answer 29

you're welcome