MYTUTOR SUBJECT ANSWERS

695 views

Factorise X^2 + 1X -12

Because the highest power of X is 2, this is a Quadratic Equation

When factorised, these look like 

       (x + a)(x + b)                 where a & b are constants

To factorise this, we need to find 2 numbers which add together to make the coefficient (number in front of) X and multiply to make the number at the end.

So we need two numbers which add together to make +1 and multiply to make -12       +4 & -3

a & b in the form above are replace by these to numbers, so the answer is

(x+4)(x-3)

Jack W. A Level Chemistry tutor, A Level Biology tutor, GCSE Maths tu...

2 years ago

Answered by Jack, a GCSE Maths tutor with MyTutor


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

624 SUBJECT SPECIALISTS

£24 /hr

Scott R.

Degree: PGCE Secondary Mathematics (Other) - Leeds University

Subjects offered:Maths, Further Mathematics

Maths
Further Mathematics

“I am currently completing 2 PGCEs in Leeds. I have always had a passion for maths and my objective is to help as many as possible reach their full potential.”

£22 /hr

Xanthe W.

Degree: Biological Sciences with a Year in Industry/Research (Bachelors) - Imperial College London University

Subjects offered:Maths, Chemistry+ 1 more

Maths
Chemistry
Biology

“Top tutor from the renowned Russell university group, ready to help you improve your grades.”

£24 /hr

Prina S.

Degree: Environmental Geoscience (Masters) - Bristol University

Subjects offered:Maths, Physics+ 2 more

Maths
Physics
Geography
Biology

“Hello there! My name is Prina and I love studying and tutoring maths and science. Check out my profile for how I teach and previous students' feedback!”

About the author

Jack W. A Level Chemistry tutor, A Level Biology tutor, GCSE Maths tu...

Jack W.

Currently unavailable: for new students

Degree: Medicine (Bachelors) - Newcastle University

Subjects offered:Maths, Music+ 2 more

Maths
Music
Chemistry
Biology

“Experienced mentor studying at a Russell-group university, here to maximise your potential.”

You may also like...

Posts by Jack

Describe the process of evolution (6 Marks)

Factorise X^2 + 1X -12

Other GCSE Maths questions

How do I solve the equation x^2 = 3x - 1 ?

Solve the simultaneous equations: 3x +4y = 18, and 5x - 2y = 4

Find the mid point of the line A B, where A is (8,-1) and B is (2,5).

Solve the simultaneous equations, 3x + 2y = 4 (1) 4x + 5y = 17 (2)

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