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Mathematics 18 Online
OpenStudy (anonymous):

Factorise (a+2)^2 - (a-3)^2

jhonyy9 (jhonyy9):

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

OpenStudy (anonymous):

So when I've converted it, it's already factorised?

jhonyy9 (jhonyy9):

converted how ?

OpenStudy (anonymous):

I mean, in the given a+2^2 is a^2, same goes with b right? So after I converted it to the other side of the equal sign, will it already be considered as factorised?

OpenStudy (anonymous):

By other side of the equal sign, I mean in the main formula

jhonyy9 (jhonyy9):

so at finaly how you have got it ?

jhonyy9 (jhonyy9):

so a here is a+2 and b is a-3

OpenStudy (anonymous):

Yes, right?

jhonyy9 (jhonyy9):

than will be firstly (a+2-(a-3))(a+2+(a-3))

OpenStudy (anonymous):

Yes, but is that the end of the equation? Will that mathematical sentence be considered as "factorised"?

jhonyy9 (jhonyy9):

yes if you continue it

jhonyy9 (jhonyy9):

make the calcules

OpenStudy (anonymous):

So, if I continue the equation, I will end up with the answer?

jhonyy9 (jhonyy9):

i like to see it

OpenStudy (anonymous):

Okay, I'll try now (a+2)^2 - (a-3)^2

OpenStudy (anonymous):

=((a+2)+(a-3))((a+2)-(a-3))

OpenStudy (anonymous):

=(2a-1)(-1)

OpenStudy (anonymous):

am I right so far?

jhonyy9 (jhonyy9):

no continue it

OpenStudy (anonymous):

Then, it will become -2a+1. Am I correct?

jhonyy9 (jhonyy9):

yes right

OpenStudy (anonymous):

Okay, thanks

jhonyy9 (jhonyy9):

my pleasure you are welcome good luck bye

OpenStudy (anonymous):

Ha, sure

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