MYTUTOR SUBJECT ANSWERS

484 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

510 SUBJECT SPECIALISTS

£20 /hr

Anahita G.

Degree: Maths and Economics (Bachelors) - York University

Subjects offered:Maths, Science+ 3 more

Maths
Science
Economics
Chemistry
.TSA. Oxford.

“I am a maths and economics student at the University of York. I have always loved logical and analytical subjects, for example Maths and the Sciences. I also particularly enjoy economics as there are countless ways to analyse and conc...”

£18 /hr

Josh H.

Degree: Natural Sciences (Bachelors) - Lancaster University

Subjects offered:Maths, Physics+ 1 more

Maths
Physics
Biology

“Hello! I'm in my third year of a Natural Sciences degree and my aim as a tutor is to give you an intuitive understanding of your subject.”

MyTutor guarantee

£18 /hr

Thomas P.

Degree: Masters in Mathematics (Masters) - Oxford, Oriel College University

Subjects offered:Maths, Further Mathematics

Maths
Further Mathematics

“About Me: I am a Maths student at Oxford University. Whilst I love learning about, talking about, and generally engaging with Mathematics, that's not all I do! Outside of studying I enjoy board games, and I play squash for the Univers...”

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

Simplify 5(x-1)^2/25(x^2-1)

When do I use a cosine rule over a sine rule?

What is the quadratic formula and how do I use it?

Solve the equations giving your answer in 2d.p (5 Marks).: x^2 + y^2 = 36 , x = 2y + 6

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