maths - functions help
is my answer to the first question correct? and how do I do part (ii) of the question, any help appreciated, thank you!
g(x)=x2+8x+15
(i) Write down an expression for g(2x)
2x^2+16x+15
(ii) Solve g(2x) = 0
?????
g(x)=x2+8x+15
(i) Write down an expression for g(2x)
2x^2+16x+15
(ii) Solve g(2x) = 0
?????
Original post by kittymityyy
is my answer to the first question correct? and how do I do part (ii) of the question, any help appreciated, thank you!
g(x)=x2+8x+15
(i) Write down an expression for g(2x)
2x^2+16x+15
(ii) Solve g(2x) = 0
?????
g(x)=x2+8x+15
(i) Write down an expression for g(2x)
2x^2+16x+15
(ii) Solve g(2x) = 0
?????
a) Check the quadratic term.
b) Means solve the quadratic = 0 (or find the roots) from part a)
(edited 2 years ago)
Original post by mqb2766
a) Check the quadratic term.
b) Means solve the quadratic = 0 (or find the roots) from part a)
b) Means solve the quadratic = 0 (or find the roots) from part a)
a) 4x^2 + 16x + 15
b) x = 1.5 or x = -2.5
Original post by kittymityyy
a) 4x^2 + 16x + 15
b) x = 1.5 or x = -2.5
b) x = 1.5 or x = -2.5
how did you work out the roots - check the sign?
As a reflection, how are they related to the roots of the original quadratic?
(edited 2 years ago)
Quick Reply
Related discussions
- Functional skills maths level 2
- Lse Economics and Economic history…help please
- Do I fail my apprenticeship if I didn't pass Maths and English?
- What’s better?
- Using the Graphical Calculator (CASIO FX-CG50) for A Level Physics (OCR A)
- functional skills online test
- Question About FE ITE bursaries
- Level 2 functional skills maths
- AQA A-level Further Maths Required Trig Functions?
- Portuguese grade equivalency
- FX-CG50 Worth It?
- Maths stand alone test
- CIE A Level Computer Science Sucks!
- Further Maths GCSE
- How much maths is there in an Economics undergraduate course?
- Discrete maths questions
- Is the Casio FX-CG50 worth it for A-Level
- Preparing for the Oxford PAT- Maths
- How do I redevelop my maths?
- GCSE or Functional skills maths for PDGE
Latest
Trending
Last reply 5 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 5 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
