When would I use the quadratic formula?
You would use the quadratic formula when trying to find the value of a variable such as x in a quadratic equation but it can not be successfully factorised with whole numbers. Treating the the equation in the form ax2+bx+c=0 then putting the values into the equation, two values of x will be found from switching the sign in the equation.
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Related Maths GCSE answers
All answers ▸c) Sharon is organising an event. The tickets cost 12 pounds each. Sharon paid 200 pounds for the cost of the event. How many tickets will Sharon have to sell to make a profit? (2 marks)
Draw a graph of x = (y + 4)/4
How do I solve simultaneous equations?
Using the quadratic equation, solve 3x^2+2x-15 to two decimal places.