NCEA Level 2 Algebra 2020 NZQA Exam - Worked Answers

91261 2.6 Algebra 2020 NZQA Exam - Worked Answers
Level 2 Apply algebraic methods in solving problems

Chapters
0:00 Intro
0:31 Question 1a (A)
5:06 Question 1b (A)
7:24 Question 1c(i) (M)
9:29 Question 1c(ii) (E)
13:25 Question 1c(iii) (E)
21:03 Question 2a (A)
21:50 Question 2b(i) (A)
23:10 Question 2b(ii) (E)
25:56 Question 2c (M)
30:21 Question 2d (E)
35:43 Question 3a (M)
37:02 Question 3b(i) (A)
38:18 Question 3b(ii) (M)
40:55 Question 3c(i) (E)
45:27 Question 3c(ii) (E)

Socials

[yikers]

Every time he says “Wow, that’s actually an achieved.” My insides turn into turmoil

[juliahuang]

you are single handedly making my life so much easier i love u so much

[theaussiecricketfan]

thank you so much, ur an amazing teacher!!!

[jjt]

Hi, I am just wondering (for Q3c(ii)) how would one know that using the quadratic formula should be the step used?

[certified_forehead]

How do you know when you can use your calculator to solve quadratics without losing marks? Great vid btw

[pinkunicorns]

I have a question for Q1, cii ( 11:31 ), a number to the power of 0.5 is sqrt, right? which means the sqrt can be positive or negative. does this mean that if the sqrt of P was negative, and was multiplied by -2, x would be positive? Thank you for the video.

[leafyreturns]

Hello sir, regarding question 2b (22:10), would -6 not be viable considering the log base can not be negative?

[laraaldin]

PLEASE think about doing some videos on level 3 statistics and probability!

[amiem]

Hi I have a question, how do you know that there must be two solutions for Q3cii? You mention that the discriminant must be positive but why can't it be equal to or be less than zero?

[BrunoPage-gy]

would you mind explaining Q 3c(ii)? Why must the descriminant be positive (I get it makes two solutions but why does it need two solutions?) and why must D be a square number? Thanks

[sumitpatel]

Sir for question 2d) what would happen if you used the discriminant formula to find the restrictions

[krabmeat]

Hi I have a question, not sure if you’ll see this but for question 1c(iii), why do you have to make p the subject to get an e8/ two excellence marks? Isnt 16P^1.5>R just the same statement? Thanks for the video though :)

[tesssmith]

thank you so much for making these videos:)

[liamm]

@infinityplusone you reckon you could work through the 2021 level 2 algebra paper and the level 2 calculus paper? Have practice exams creepign up and it would be real handy

[briannaevans]

How do you know to divide 10 by 2 in the 1b?

[ChristeenRodrigo]

How can we solve quadratics to find the value of x without the calculator?

[chich]

for Q3cii, i get why the discriminant cant be negative but why cant it be equal to zero? is it because 187/12 isn't an integer? and even if it was an integer, does the question necessarily have to have 2 roots (days)?

[eggman]

at 31:43 how do you know that the parabolas are equal to each other?

[sunshine_gachalife]

Man U making me confused. 1:25 how do we put our own number, I keep going back and forth cuz I do not understand.

[danielplant]

Is their any chance you could do the level 2 Calculus 2020 paper please? We have mocks coming up soon and I would appreciate it