Question

(4y-9)^2

Answer 1

do you know formula (a-b)^2 = ?

Answer 2

it equals a^2-ab+b?

Answer 3

the problem wants me to factor it

Answer 4

Am i suppose to first distribute and then factor?

Answer 5

so (a-b)^2 = a^2 -2ab +b^2

so then you need factorit it

(4y-9)^2 =(4y-9)(4y-9)

or not ?

Answer 6

but you can make again

4y = (2sqrty)^2

so in this case us formula a^2 -b^2 =(a-b)8a+b)

Answer 7

sorry there i have missed a parentheses

a^2 -b^2 =(a-b)(a+b)

Answer 8

That's what I thought but i wasn't sure if I needed to solve first and then factor.

Answer 9

so then now can you solve it ?

Answer 10

yes. thank you

Answer 11

was my pleasure

good luck

bye