See what we can offer to your school
"SimpleStudy just makes sense...”
Get the best plan for your school
10 questions from this quiz
Solving any quadratic equation
x=−b±b2−4ac2ax = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}x=2a−b±b2−4ac
The discriminant
Two distinct real roots
One repeated real root
No real roots
Standard form ax2+bx+c=0ax^2 + bx + c = 0ax2+bx+c=0
Plus or minus
When equation can't be factorised easily
Select your subjects, and get access to A+ resources today.