Question

How do you expand (x - 11)^2?

Answer 1

apply (a-b)^2 formula

Answer 2

What's the next step?

Answer 3

do u know how to expand a(b+c)

Answer 4

Do you distribute?

Answer 5

yes

Answer 6

after applying that formula, u will get ur answer

Answer 7

can u expand a(b+c)

Answer 8

a(b+c) -> ab + ac...?

Answer 9

yes

Answer 10

so use that

Answer 11

Do I distribute with x?

Answer 12

(a+b)(a+b) = ?

Answer 13

I'm not sure, I skimmed through the lesson. :(

Answer 14

Is it aˆ2 + ab + ab + bˆ2 ?

Answer 15

:(

Answer 16

use what u already know

Answer 17

what do u do with y(a+b)

Answer 18

You distribute y with a and b.

Answer 19

write it out

Answer 20

we dont use english, we use math

Answer 21

y(a+b)=ya+yb
y=(a+b)
(a+b)(a+b)=(a+b)a+(a+b)b

Answer 22

Oh, alright!

Answer 23

(a+b)a+(a+b)b
(aa+ba+ab+bb)
a^2+2ab+b^2

Answer 24

Thank you :)

Answer 25

(x - 11)^2
(x-11)(x-11)
(x - 11)x-(x - 11)11
xx-11x-(x11-11*11)
x^2-11x - 11x +11^2
x^2-22x+11^2

Answer 26

:)

Answer 27

Thank you so much!

Answer 28

if you want to thank me, do this for me (X+3)(x+1)

Answer 29

google "foil math expansion"

Answer 30

Sorry it's taking me a while, but would I have to do two separate expansions for that?

Answer 31

yeah so think of whatever in one bracket as just one variable

Answer 32

(x+3)(x+2)
so lets make x+3 = a
a(x+2)
ax+2a
now sub x+3=a
(x+3)x+2(x+3)

Answer 33

expand the last line again