Question

Simplify (3n - 2m)^2 = ?
I will give a medal!
Btw, I want an explanation, as to how to solve it, not a direct answer. ^_^ P.s. Thanks a ton!

Answer 1

@AravindG @baru

Answer 2

you have to use the "distributive property of multiplication over addition"

for example
\[a(b+c+d)= ab+ac+ad\]

Answer 3

here you have\[(3n-2m)(3n-2m)\]

Answer 4

i only have an a and a b

Answer 5

yes, its like ab x ab

Answer 6

i mean a-b x a-b :P

Answer 7

treat the first (3n -2m) like you would have treated "a"

Answer 8

... ?

Answer 9

you get
(3n-2m)3n - (3n-2m)2m

Answer 10

oh

Answer 11

so, 9n-6mn - 6nm-4m ?

Answer 12

so, 9n - 12mn - 4m ?

Answer 13

wait, its 9n^2 - 12mn - 4m^2 isnt it?

Answer 14

very close...
but you have made a couple of errors
remember that \(n \times n =n^2\)
and negative number multiplied by a negative number is positive

Answer 15

oh, so its 9n^2 + 12mn + 4m^2 ?

Answer 16

everythings right, but there a mistake in the signs

Answer 17

??

Answer 18

what do you mean?

Answer 19

(3n-2m)3n - (3n-2m)2m

9n^2 -6mn - (6mn - 4m^2)

9n^2 -6mn -6mn +4m^2

9n^2 -12mn +4m^2

Answer 20

oh, xD i see.

Answer 21

ok, thanks! ^_^

Answer 22

no prob :)