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AQA Level 2 Further Maths - Unofficial mark scheme

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question 4 was the circle equation one: centre (-5,8), radius root(10)

question 6 was find the values of m and p in an identity: m =8, p= -1

question 9 was expand and simplify (x-5)^3 = x^3 - 15x^2 + 75x - 125

question 11 - coords given for pts A B and C, prove AB and BC are perpendicular (gradients were -5/2 and 2/5)

question 12 completing the sq: (a) h=3, k= -7 (b) (-3,-7) (c) -3 +/- root(7)

question 15 rationalise denominator 6/(root(7) + 2) = 2root(7) - 4

(edited 7 years ago)

Reply 41

Disfuligee

Original post by niichola.

There was a question about the root 80 + root xI got x=25

Sorry mate that was x=45 because root125 is 5root5, root20 is 2root5 and root80 is 4root5, so x=3root5 which is root45

(edited 7 years ago)

Reply 42

Disfuligee

Original post by iLukeAi

For the range of x values question, I put 9, 10 , 11 because the question asked for integer solutions? I did put 8 < x < 12, but only in the working out

I think this is right cause it asked for integer values definitely

Reply 43

username1915455

Original post by penelopecrux

I really don't know how u got -80 for the x/y question, i wrote 80 :/

y<0, so when you do the square root you take the negative one and get -80

Reply 44

Padamire

Does anybody remember the limiting value question- everybody seems to have got 3/5 but I managed to get 2 :s-smilie:

Reply 45

alexgower

Original post by jjen2603

oh I thought he just said an A.

Oh right, because A^ is 2 grades above A (A^,A*A)

Reply 46

DvsAmjed

What was the range question? I think I must have missed it out. How many marks was it?

Reply 47

jojo41

Original post by DvsAmjed

What was the range question? I think I must have missed it out. How many marks was it?

Not a range/domain question but the question that people are talking about a range for is:
Q7 find the integer values of x for x^2 - 20x + 96 < 0 (3marks, I think)

Reply 48

lexiethomas

What was the rationalising the denominator question and what did everyone get as the answer?

Reply 49

DvsAmjed

Original post by jojo41

Not a range/domain question but the question that people are talking about a range for is:
Q7 find the integer values of x for x^2 - 20x + 96 < 0 (3marks, I think)