3 different versions of sths 2014 trial Q4 (1 Viewer)

[tywebb]

The original (which is wrong) has 2x³+bx²-5x+20.

Another version going around has 2x³+bx²-2x+20 (also wrong).

The correct version has 2x³+bx²+2x+20.

This third version is available at http://4unitmaths.com/sydney-tech-ext2-2014.pdf

 

[enigma_1]

The original (which is wrong) has 2x³+bx²-5x+20.

Another version going around has 2x³+bx²-2x+20 (also wrong).

The correct version has 2x³+bx²+2x+20.

This third version is available at http://4unitmaths.com/sydney-tech-ext2-2014.pdf

lel.... so what is your question?

 

[tywebb]

I don't have a question.

I have a correction to a correction to a question.

 

[dan964]

Yeah the second is an error of mine. sorry.
A friend of mine wanted to prove that the question was wrong.
Obviously I added the minus by mistake.
(Suprising you didn't need the question to be right anyway depending on your method)

 

[Fade1233]

http://www.boardofstudies.nsw.edu.a...f_doc/senior-secondary-evaluation-2014-08.pdf