Answers>Maths>A Level>Article

Express 2x^2 +8x +7 in the form A(x+B)^2 + C, where A, B and C are constants

2x²+8x+7=2(x²+4)+7=2((x+2)²-4)+7=2(x+2)²-8+7=2(x+2)²-1A=2, B=2, C=-1

Answered by Matilda C. • Maths tutor

9232 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

When would you apply the product rule in differentiation and how do you do this?

Find the coordinates of the stationary points of the curve 3x=y+6x+3

f(x) = 2x3 – 5x2 + ax + 18 where a is a constant. Given that (x – 3) is a factor of f(x), (a) show that a = – 9 (2) (b) factorise f(x) completely. (4) Given that g(y) = 2(33y ) – 5(32y ) – 9(3y ) + 18 (c) find the values of y that satisfy g(y) = 0, givi

Integral of sin^2(x) with respect to x

Popular Requests

Maths tutor Chemistry tutor Physics tutor Biology tutor English tutor GCSE tutors A level tutors IB tutors Physics & Maths tutors Chemistry & Maths tutors GCSE Maths tutors

CLICK CEOP

Internet Safety

Payment Security

Cyber

Essentials

MyTutor is part of the IXL family of brands:

IXL

Comprehensive K-12 personalized learning

Rosetta Stone

Immersive learning for 25 languages

Wyzant

Trusted tutors for 300 subjects

Education.com

35,000 worksheets, games, and lesson plans

Vocabulary.com

Adaptive learning for English vocabulary

Emmersion

Fast and accurate language certification

Thesaurus.com

Essential reference for synonyms and antonyms

Dictionary.com

Comprehensive resource for word definitions and usage

SpanishDictionary.com

Spanish-English dictionary, translator, and learning resources

FrenchDictionary.com

French-English dictionary, translator, and learning

Ingles.com

Diccionario ingles-espanol, traductor y sitio de apremdizaje

ABCya

Fun educational games for kids