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how did you do this question? (OL Maths Q 2b)

Mwah · 2010-06-11 16:23:38

ord level maths 1 question 2b was 2x-y=1 x2-xy=-6 ive never seen it with a number infront.. :( i got like 2x=1-y and didnt kno were to put it in (lol)

Comments

#32 11-06-2010 10:33PM

freeze4real

Registered Users, Registered Users 2 Posts: 2,540 ✭✭✭

Join Date: November 2009

Posts: 2337

Haha for 3b I got the answer. I ddnt do okay. But I got this

formulae is z squared + sum of roots + product of roots

2+/- 3square is a root so the conjugate is another root

2 + 3 = 5

2 - 3 = -1

the answer is 5

Use the B squared formulary

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