Original post by coatsoft
first question:
expand (3x-1)(2x+3)
= 6x^2+7x-3
then Im asked to show how I can use my answer to work out 29 * 3:
how am I supposed to do that?
Any help would be appreciated. Thanks In advance
expand (3x-1)(2x+3)
= 6x^2+7x-3
then Im asked to show how I can use my answer to work out 29 * 3:
how am I supposed to do that?
Any help would be appreciated. Thanks In advance
I suspect a typo, and they really want 29 * 23.
Looking at the factorisation, what might be a suitable choice for x?
Original post by ghostwalker
I suspect a typo, and they really want 29 * 23.
Looking at the factorisation, what might be a suitable choice for x?
Looking at the factorisation, what might be a suitable choice for x?
god been looking through my notes and had read a number wrong. My writings so bad. x = 10
Original post by coatsoft
god been looking through my notes and had read a number wrong. My writings so bad. x = 10
Yep. And just put that into the quadratic, which is easy to work out with x=10.
Quick Reply
Related discussions
- Maths graph help
- maths
- Binomial Expansion
- Math help - factorising cubic equations
- Find all real roots
- Maths question
- Maths A level question
- I need help 😢
- Differentation help
- Hi can someone help with this maths question
- Quadratics
- Partial Fractions Question
- gcse further maths quadratics
- Edexcel IGCSE 24th May 2018 Paper 3H Unofficial mark Sceheme
- Quadratics
- Hard GCSE Question
- Proof question
- C2 Series Help Please
- Maths - GCSE
- TMUA yotta mock paper 1
Latest
Trending
Last reply 2 days ago
Did Cambridge maths students find maths and further maths a level very easy?Last reply 2 weeks ago
Edexcel A Level Mathematics Paper 2 unofficial mark scheme correct me if wrongMaths
71
Trending
Last reply 2 days ago
Did Cambridge maths students find maths and further maths a level very easy?Last reply 2 weeks ago
Edexcel A Level Mathematics Paper 2 unofficial mark scheme correct me if wrongMaths
71
