The Quadratic Formula (Edexcel GCSE Maths): Quizzes
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Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is the discriminant in the quadratic formula?
What is the discriminant in the quadratic formula?
What does the discriminant determine?
What does the discriminant determine?
How many real solutions exist
In , what is ?
In , what is ?
The constant term
What is a common mistake with the denominator in the quadratic formula?
What is a common mistake with the denominator in the quadratic formula?
Using instead of
How many solutions does the symbol give?
How many solutions does the symbol give?
Two solutions
When should you use the quadratic formula?
When should you use the quadratic formula?
When equations won't factorise easily
What should you be extra careful with when using the quadratic formula?
What should you be extra careful with when using the quadratic formula?
Negative signs
What is the first step when using the quadratic formula?
What is the first step when using the quadratic formula?
Rearrange into standard form
If you get a negative discriminant, what should you do?
If you get a negative discriminant, what should you do?
Check your working
In , what is the value of ?
In , what is the value of ?
What does divide in the quadratic formula?
What does divide in the quadratic formula?
The entire numerator
Why use the quadratic formula for answers to specific decimal places?
Why use the quadratic formula for answers to specific decimal places?
It allows decimal approximations