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.
EO
Related Maths GCSE answers
All answers ▸There are n sweets in a bag, 6 orange, rest yellow. H takes two, one after another, and eats them. Probability both are orange is 1/3. Show n^2 - n - 90 = 0.
Find the coordinates of the minimum point of the curve y=x^2+6x+5.
Solve the inequality 2(2x − 4) > 28
Solve the following simulatenous equation to find the values of both x and y: 5x+2y=16 3x-y=14