How to solve a quadratic equation.
Group the like terms together to make the equation less messy leaving the equation equal to 0.Simplify the long quadratic equation into brackets.Each bracket must be equal to 0 to fulfil the equation.When a bracket is equal to 0 the sum of the terms in the bracket must be 0 which will help us find the unknown.
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In 2017 the number of teachers in a school was 20. The number of teachers doubles each year. If in 2019 3/5 of the teachers are female how many male teachers are there in 2019?
2x + y = 24, x - y = 6
Rearrange the equation y = 3(x+1)/4, making x the subject.