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How do I know how many roots a quadratic equation has?

Let ax² + bx + c = 0 be the equation in question where a,b,c are real numbers with a not equal to 0 (otherwise we would not have a quadratic).

If:

Answered by Amit G. • Maths tutor

8772 Views

Given that 346 × 27 = 9342 , work out 34.6 × 2.7

Lets compare the numbers in the question:
34.6 x 2.7 is the same as 346/10 x 27/10 (decimal to fraction)

therefore...
34.6 x 2.7 is the same as ( 346 x 27 ) /100 (multiplying to...

Answered by Andrew W. • Maths tutor

6705 Views

Factorise x² + 10x + 16

This is a quadratic equation.
When we are asked to facorise a quadratic equation, we should label the 3 parts of it a, b and c.

x² + 10x + 16
a b c so a =...

Answered by Andrew W. • Maths tutor

63025 Views

How do you solve the #EdexcelMaths question?

Remember the uproar on Twitter about an Edexcel GCSE Maths paper, sparking the #EdexcelMaths trend on Twitter? Whether you do or don't, the question that caused the controversy is with...

Answered by Curtis M. • Maths tutor

4770 Views