MYTUTOR SUBJECT ANSWERS

323 views

What is the method for factorising the expression 'x^2 + 3x + 2'?

1. First look at the constant coefficient, which in this case is 2. You need two numbers which will multiply together to make this number. The only pairs of numbers that will make 2, are (1 and 2) or (-1 and -2).

2. Secondly, the coefficient of the x term needs to be observed, which is 3 here. This must be made by adding together two of these numbers. Looking at the pairs of numbers which we are already limited to, we can see that 1 and 2 work, as they sum to 3.

3. This allows the expression to be factorised into the following brackets:

(x+1)(x+2)

Will W. GCSE Maths tutor, A Level Maths tutor, A Level Further Mathem...

8 months ago

Answered by Will, a GCSE Maths tutor with MyTutor


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

531 SUBJECT SPECIALISTS

£20 /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.”

Ashika V. GCSE Maths tutor, A Level Maths tutor, IB Maths tutor, 13 P...
£24 /hr

Ashika V.

Degree: Physics (Masters) - Manchester University

Subjects offered:Maths, Physics+ 2 more

Maths
Physics
Extended Project Qualification
-Personal Statements-

“Hi I'm Ashika, a third year MPhys Physics student at the University of Manchester. I tutor in Maths and Physics, Personal Statements and the EPQ.”

£22 /hr

Lucy B.

Degree: Anthropology (Doctorate) - Cambridge University

Subjects offered:Maths, Science+ 5 more

Maths
Science
Drama
Chemistry
Biology
-Personal Statements-
-Oxbridge Preparation-

“Enthusiastic Cambridge grad, with experience in Biology and Maths, passionate about helping students reach their potential and achieve the grades they deserve. ”

MyTutor guarantee

About the author

Will W.

Currently unavailable: for new students

Degree: Mathematics (Bachelors) - Durham University

Subjects offered:Maths, Physics+ 2 more

Maths
Physics
Further Mathematics
.STEP.

“Hi, I'm Will. I study Maths and Physics and really enjoy talking about them. I am patient and caring, so will take the time to refine a student’s understanding.”

You may also like...

Posts by Will

How do you calculate the derivative of cos inverse x?

How do you integrate (sinx)^2?

How much work must be done on a 4.0kg frictionless trolley, to accelerate it from rest to a velocity of 5.0m/s?

Show that substituting y = xv, where v is a function of x, in the differential equation "xy(dy/dx) + y^2 − 2x^2 = 0" (with x is not equal to 0) leads to the differential equation "xv(dv/dx) + 2v^2 − 2 = 0"

Other GCSE Maths questions

An ice cream cone with a base 4.5 cm in diameter and whose height is 10 cm is filled with ice cream. What is the volume of ice cream to 3 d.p.? If the density of ice cream is 1095 kg/m^3, what is the mass of ice cream in 5 cones to 3 s.f.?

Show clearly that (3√3)^2 = 27

The number of uniform spherical shots that can be made from a given mass of lead varies inversely to the cube of the radius. When the radius is 1mm the number of shots made is 2744. How many shots of radius 1.4mm can be made from the same mass.

How do I solve a simple simultaneous equation?

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