How do I find the roots of a quadratic?
e.g. given x^2 +3x -8 = 0using the quadratic formulayou find x = (-b +- sqrt(b^2 -4ac))/2ayou then find one root using the plus instead of plus minus sign, and the other root using the minus instead of plus minus sign.
TD
Related Maths GCSE answers
All answers ▸In one month, Karen takes the bus to school on 25 days. On 5 of these days the bus is late. What fraction of the days Karen takes the bus to school is the bus late? (Give your answer in the simplest form)
Solve the simultaneous equations.
A right-angled triangle has base 10cm and height 4cm. What is the area of the triangle?
((2x + 3)/(x-4)) - ((2x-8)/(2x+1)) = 1