Expanding and factorising

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Reply 20

GonnaMarryTheNight

**** me im glad i wont do maths anymore in my lifetime
ALL hail the calculator!

Reply 21

steve2005

Original post by zed963

So in order to factorise this it becomes

4(25p^2-q^2+6)[br]=4(5p+q+2)(5p-q+3q)[br][br]

The bottom line is almost perfect. Of course at the end it should be 3 rather than 3q.

I'm guessing that you are pleased that you ended up with almost the correct answer, HOWEVER, several errors in the working have cancelled each other out.

As pointed out earlier these are serious errors rather than just mistakes. The errors were made by nm786

The blind leading the blind.

Reply 22

Math12345

Original post by nm786

so what does it equal to?

(p + 1/2 )^2

I would write it as:

(p+1/2)(p+1/2)

Then expand it. :smile:

Reply 23

zed963

Original post by steve2005

There are several methods of factorising the expression.

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please can you explain this method

Reply 24

TenOfThem

Original post by zed963

please can you explain this method

it is difference of 2 squares ... same as i showed you yesterday

Reply 25

steve2005

Original post by zed963

please can you explain this method

YOU need to study what I have done. Apparently the Iran's are reverse engineering an American Drone, can't you reverse engineer a SIMPLE maths factorisation.

I've just realised that, unlike the Americans, you have three examples to study. Two from me and one from TenOfThem.