MYTUTOR SUBJECT ANSWERS

507 views

Expand (2x-3)(4x+4) using the FOIL method.

Question: 

Expand (2x-3)(4x+4) 

We will be using the FOIL method. FOIL is an ancronym: 

F=first

O=outside

I=inside

L=last

So, to begin, we start with the first term in each bracket, and multiply them together. 

2x*4x=8x2

Next, we take the outside terms of the brackets, so 2x and 4.

2x*4=8x

Now, we move onto the inside terms. Now this may seem a little complicated. As the first bracket is (2x-3), we must always involve the fact that the 3 is negative. So, we are using the figures, -3 and 4x

-3*4x=-12x

Finally, the last terms 

-3*4=-12

We then add all these answers up

8x2+8x-12x-12=

8x2-4x-12

Therefore (2x-3)(4x+4)=8x2-4x-12

 

 

Miriam W. GCSE English Literature tutor, A Level English Literature t...

2 years ago

Answered by Miriam, who has applied to tutor GCSE Maths with MyTutor

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

327 SUBJECT SPECIALISTS

£24 /hr

Robbie H.

Degree: Engineering Design (Masters) - Bristol University

Subjects offered: Maths, Physics

Maths
Physics

“I am a 22 year old Master's student at the University of Bristol studying Engineering Design. I achieved a First in my Bachelors and A*A*A at A Level. I have apassion for maths and science and hope that in my sessions some of this wil...”

MyTutor guarantee

£18 /hr

Ben B.

Degree: Medicine (Bachelors) - Bristol University

Subjects offered: Maths, Science+ 3 more

Maths
Science
Chemistry
Biology
-Medical School Preparation-

“Hi - I'm currently in my 3rd year of studying Medicine at Bristol University and am taking an intercalated year out to conduct my own research into 3D printing applications in Cerebral Palsy. I have a real interest in science with ent...”

MyTutor guarantee

£24 /hr

Tom D.

Degree: Chemistry (Masters) - Oxford, St Edmund Hall University

Subjects offered: Maths, Science+ 3 more

Maths
Science
Further Mathematics
Chemistry
-Oxbridge Preparation-

“I am currently entering my fourth year in a Chemistry degree at the University of Oxford, where I am undertaking a Masters project in Chemistry education. I love Chemistry and Maths and have passion for teaching, with an interest into...”

About the author

Miriam W.

Currently unavailable: for new students

Degree: English Literature (Bachelors) - Edinburgh University

Subjects offered: Maths, English Literature+ 1 more

Maths
English Literature
Biology

“Hello! I'm Miriam, a third year English Literature student from the University of Edinburgh, ready to assist with Maths, Biology and English Literature GCSE revision”

MyTutor guarantee

You may also like...

Other GCSE Maths questions

What is the Pythagoras Equation?

Factorise and solve x^2 - 8x + 15 = 0

If I have £730 in my bank account which has 2.5% compound interest per year, how much more money will be in there after two years?

Solve X^2 +13X+48=12

View GCSE Maths tutors

Cookies:

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

mtw:mercury1:status:ok