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Thanks and yeah, I am a Troung student.

I think its means that one is positive and one is negative. It works for part a and part b if this is the case.

Hi. P(x)=16x^4-32x^3+16x^2+kx-5, where k is an integer. P(x) has two rational roots, which are opposites of each other, and two non-real roots. a. If a (alpha) is a non-real root of p(x), show that Re(a)=1 and modulus(a)>1. b. If the rational roots are +- b (beta), deduce that b^2<5/16/ c...

Thanks for the help. I got the same answer as you, but the answers says its 4% somehow.

Hi. The radius of the base of a cone is increasing at the rate of 2% per second. At what percentage is the height diminishing if the volume is kept constant? Can someone help me do this question please? Thank you.

These are really good notes.

I just found out that the question was in the 2012 HSC Chemistry Exam. It is question 31 if that helps.

Hi. Over the coming holidays, should I do the exercises from Cambridge Mathematics? Is it worth doing the questions? How long would it take to finish most of the exercises? I have both the Year 11 and Year 12 one. In class, we only used the horrible textbook by Johns and Couchman. Thank you.

I know that the enthalpy change is negative, but what about the heat of combustion or molar heat of combustion?

Hi. Is the value for molar heat of combustion positive or negative? I've read different books and they're all different. Some don't put a negative sign for the molar heat of combustion, while some do. Which one is correct? Thank you.

Hi. What is the type of intermolecular force between alcohols? I had this in my chemistry practical test. I put hydrogen bonding, while the rest of my class put dispersion forces. Which is right? Thank you.

Is this statement better: "The extent of Billy’s childhood experiences in shaping his sense of not belonging is shown through the metaphor, “the wind and rain hits you in the face with the force of a father’s punch,” that contributes to the pathetic fallacy." Am I still storytelling?

My text is 'The Simple Gift.' So what I've been doing for all my essays in Year 11 is wrong. Is it possible for you to give an example of what typical analysis should be like? (It doesn't matter what text it is for. I need an example of good analysis.)

Hi. I received advice for my essays in Year 11 that mostly says that I should avoid storytelling, but I have no idea how to. Can you help me fix this statement to avoid storytelling: "The metaphor, ‘He walked back inside/ and slammed the door/ on my sporting childhood/ that disappeared into the...

Is the New Senior Mathematics Four Unit Course by JB Fitzpatrick any good? My teacher keeps telling the class to go and buy it.

Wait... Did you provide the feedback for the one by John Smith or the one by Pheonix Education?

I'm so sorry. I didn't read it correctly.

Does Supplement 4 Unit Maths cover everything, such as Graphs, Complex Numbers and Polynomials?

Thanks for the feedback. What about the Extension 1 HSC Practice Questions by Topic by John Smith? Is it any good?

Thanks for the feedback. So New Senior Mathematics Four Unit Course by JB Fitzpatrick is useless? Also, what's the difference between Revised 4 Unit Maths Course and Supplement 4 Unit Maths both by Jim Coroneos?