MYTUTOR SUBJECT ANSWERS

390 views

What can I say about the roots of a quadratic equation without actually calculating them?

If a quadratic equation is of the form ax2+bx+c, calculate D (Discriminant) whose value is b2-4ac. 

If the value of D is negative, the equation has imaginary roots.

If the value of D is positive, the equation has real and distinct roots.

If the value of D is zero, the equation has real and equal roots.

Swapnil S. GCSE Maths tutor, GCSE Physics tutor, GCSE Chemistry tutor...

2 years ago

Answered by Swapnil, a GCSE Maths tutor with MyTutor


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

324 SUBJECT SPECIALISTS

£18 /hr

Silje I.

Degree: Economics (Masters) - Warwick University

Subjects offered: Maths, Economics

Maths
Economics

“Hi! My name is Silje Indrebo and I am currently completing a Master's degree in economics at University of Warwick. Before coming to Warwick I graduated with a Bachelor's degree in economics from UC Berkeley. Interests: I have alway...”

MyTutor guarantee

£20 /hr

Abi R.

Degree: Engineering (Bachelors) - Exeter University

Subjects offered: Maths, Physics+ 3 more

Maths
Physics
Geography
Design & Technology
-Personal Statements-

“About me: I'm in my first year at the University of Exeter studying Mechanical Engineering. My favourite subjects are Maths & Science and my physics teacher is who inspired me to really love teaching others. He was great at using ana...”

£18 /hr

Andrew D.

Degree: Mathematics (Masters) - Warwick University

Subjects offered: Maths, Further Mathematics

Maths
Further Mathematics

“About me Hi, I'm Andrew. I'm currently going into my second year studying maths at the University of Warwick. I find maths incredibly fascinating, as my passion stems from the idea thatmaths is everywhere and is fundamental to underst...”

About the author

£18 /hr

Swapnil S.

Degree: BEng (Hons) Electrical and Electronics Engineering (Bachelors) - Manchester University

Subjects offered: Maths, Physics+ 2 more

Maths
Physics
Further Mathematics
Chemistry

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

MyTutor guarantee

You may also like...

Posts by Swapnil

What can I say about the roots of a quadratic equation without actually calculating them?

What is a critical angle and when does total internal reflection take place?

Why are elements of group 0 chemically inert?

Other GCSE Maths questions

Insert one pair of brackets so that this calculation is correct; 3 x 6 + 5 - 1 = 32

Find the highest common factor of 432 and 522

What is the fraction of blue beads?

If I put £500 in the bank with an annual interest rate of 3% how much money will I have earned in 2 years?

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