Question

km*mn*nk. I don't understand it. Help! I need somebody, Help! Not just anybody!....A maths tutor.

Answer 1

No nick not you, you didn't explian properly before. Like I dont get how to do them.

Answer 2

what is the question?

Answer 3

do you need to simplify this:

km*mn*nk

Answer 4

peform it then simplify the answer

Answer 5

when we multiply something by itself it's called "squaring" and you write the number with a small "2" in the "superscript" (above) :

\[k \times m \times m \times n \times n \times k = k \times m^2 \times n^2 \times k\]
so now we have
\[k \times m^2 \times n^2 \times k \]

ok now when you multiply things you can swap them round, the technical name for this property is "commutative" . for example you'd agree that 2x3 = 3x2

this works in algebra as well
\[k \times m^2 \times n^2 \times k = k \times k \times m^2 \times n^2\]

and simplifying once more:
\[ k \times k \times m^2 \times n^2 = k^2 m^2 n^2\]

in fact we can write the whole thing like this:
\[(kmn)^2\]

Answer 6

is that what you were after?

Answer 7

Yes yes thankyou very much my dear friend!!!

Answer 8

so you understand fine? if anything is still confusing just say and ill try to help :)

Answer 9

Aw ok. I'll add you and rate you and stuff. Good maths teacher!