Question

Find (3y-1)^2

please help because i am not that good at math and i dont have much time to complete this

Answer 1

please show your work if possible
thank you and God bless!

Answer 2

You can either use \(\large \color{blue}{ \bf (a-b)^2=a^2-2ab+b^2 }\)

or pascal's Triangle



\(\Large\color{red}{ \bf 1 }\)
\(\Large\color{red}{ \bf 1~~~~~~~~1 }\)
\(\Large\color{blue}{ \bf 1~~~~~~~2~~~~~~~1 }\)
\(\Large\color{red}{ \bf 1~~~~~~3~~~~~~~~3~~~~~~~1 }\)
\(\Large\color{red}{ \bf 1~~~~~~4~~~~~~~6~~~~~~~4~~~~~~~1 }\)
\(\Large\color{red}{ \bf 1~~~~~5~~~~~10~~~~~~10~~~~~~5~~~~~~1 }\)

Answer 3

i havent learned pascals triangle yet, so i am guessing it would be 3^2-2(3)(1)+1^2
is that correct?

Answer 4

well (3y)^2-2(3y)1+1^2 don't forger the "y". Now , expand it...

Answer 5

hello?

Answer 6

It would be: \( (3y)^2 - 2(3y)(1) + (1)^2\)

Answer 7

so thats the final answer or is it possible to simplify it

Answer 8

Simplify it.

\((3y)^2 - 2(3y)(1) + (1)^2 = 9y^2 - 6y + 1\)

Answer 9

oh ok thank you

Answer 10

You are welcome.