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Solve x^2+7x+12=0

We need the equation in the form (x+a)(x+b)=0. The numbers in the brackets (a and b) must multiply together to get the constant at the end of the equation, in this case 12. The numbers (a and b) must add tog...
AS
Answered by Amy S. • Maths tutor
4192 Views

How do I factorise a quadratic equation?

A quadratic equation will always take the form ax 2 + bx + c, where x is a variable and a, b and c are numbers. The equation may be given to you with several x 2 values, several x values or several numbers. ...
KM
Answered by Kate M. • Maths tutor
7428 Views

Ben would like to buy two tickets for the theatre, each ticket costs £25 and there is a 15% booking fee applied to the ticket cost. How much does it cost him to buy the two tickets with the additional fee?

25 x 2 = 50 15% = 0.15 50 x 1.15 = 57.5 or 0.15 x 50 = 7.5 50 + 7.5 = 57.5
AP
Answered by Alexander P. • Maths tutor
3496 Views

How to do simultaneous equations?

Give the student an example question.e.g: past paper question from OCR (higher tier) paper 4 2017 Each week Dan drives two routes, route x and route y. One week he drives route x three times and route y twic...
RR
Answered by Rachel R. • Maths tutor
9148 Views

The value of a new car is £18000. The value of the car decreases by 25% in the first year, and 12% in each of the next 4 years. Work out the value of the car after 5 years.

In the 1st year the car loses 25% of its value, meaning it retains 75% of its value. The starting value (100%) was £18000, so multiplying this by the 75% retained - remembering to change this to decimal nota...
AM
10231 Views