MYTUTOR SUBJECT ANSWERS

265 views

How can I solve a quadratic equation by factorisation?

There are many ways to solve quadratic equations including completing the square, factorisation and using the quadratic equation.

Factorisation involves breaking the quadratic equation into two sets of brackets that when multiplied together, give the quadratic equation. For the general case without a coefficient x2+bx+c=0, the key to this is finding two numbers that add to make b and also multiply together to make c. Then you can put these numbers into the general brackets (x+c)(x+d) where c and d can be positive or negative.

You can then check this answer by using another method of solving, or by substituting the numbers into the original quadratic and both should give an answer of 0.

Tiarnan B. GCSE Chemistry tutor, GCSE Maths tutor, GCSE Geography tutor

6 months ago

Answered by Tiarnan, a GCSE Maths tutor with MyTutor


Still stuck? Get one-to-one help from a personally interviewed subject specialist

511 SUBJECT SPECIALISTS

£20 /hr

Ben C.

Degree: English Literature (Bachelors) - Durham University

Subjects offered:Maths, Spanish+ 4 more

Maths
Spanish
Philosophy
English Literature
English Language

“About me Hello! I am an English student at Durham University. English has always been my favourite subject, and choosing to do it at university was a very easy decision for me. So, if you’re looking for English tuition then I’m your m...”

£18 /hr

Raquel L.

Degree: Physics with Theoretical Physics (Masters) - Kings, London University

Subjects offered:Maths, Spanish+ 1 more

Maths
Spanish
Physics

“I am a Physics with Theoretical Physics student at King´s College London. And if there is something that I love even more than Physics and Science is learning. I love it so much that I decided to leave my country, leaving there my fam...”

£18 /hr

Matilda C.

Degree: Medicine (Bachelors) - Edinburgh University

Subjects offered:Maths, Science+ 4 more

Maths
Science
Chemistry
Biology
.UKCAT.
-Medical School Preparation-

“Hi, my name's Matilda and I'm a third year, cricket-loving medical student at the University of Edinburgh. I have a genuine love of helping other people and doing my very best of have a positive impact on their lives; this is at the c...”

MyTutor guarantee

About the author

£22 /hr

Tiarnan B.

Degree: MChem (Masters) - York University

Subjects offered:Maths, Geography+ 2 more

Maths
Geography
Chemistry
-Personal Statements-

“I am a fun, open and qualified tutor. I guarantee by choosing me you will reach where you want to be and beyond, all while enjoying the subject!”

You may also like...

Other GCSE Maths questions

How do I know which trig formula to use in the exam?

Can you make 'p' the subject of the following equation? 4(p-2q)= 3p+2

Rearrange the following, making c the subject: (3c + b)/2 = c + a

Solve the two simultaneous equations: 2y + x = 8 [A] and 1 + y = 2x [B]

View GCSE Maths tutors

We use cookies to improve your site experience. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok