Factorise x^2 + 7x + 10

'Factorise' essentially means put into a simpler form, in this case with two sets of linear equations which would multiply out to give the quadratic equation shown above.

What we are looking for to begin with is two numbers that add together to give 7, and multiply to give 10.We reach the numbers 5 and 2 in this example. We then simply re-arrange the quadratic into the form ' (x+a)(x+b)', where a and b are the two numbers we have found that multiply and add respectively to give 10 and 7.

Therefore, factorised, x^2+7x+10 is (x+5)(x+2)

DJ
Answered by David J. Maths tutor

20547 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

The perimeter of a right-angled triangle is 72 cm. The lengths of its sides are in the ratio 3 : 4 : 5 Work out the area of the triangle.


How to solve the simultaneous equations of 3x + 2y = 9 and x-y = 3


Billy wants to buy these tickets for a show. 4 adult tickets at £15 each 2 child tickets at £10 each A 10% booking fee is added to the ticket price. 3% is then added for paying by credit card. Work out the total charge when paying by credit card.


Solve this simultaneous equation: 2 + 5y = 3x, x + y = 6


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences