What is the expansion of (x + 4)(x - 5) ?

To expand this we multiply the first term in each bracket together to get x2 Then we do the first bracket's first term by the second bracket's second term to get -5x The we do the first bracket's second term by the first, then the second, terms of the second bracket to get 4x -20 Together that makes x2 - 5x + 4x - 20 and we can simplify this to get x2 - x + 20 which is the answerTo remember how to expand you can use the acronym FOIL, multiplying the First, Outside, Inside, Last terms together before simplifying.

HD
Answered by Honor D. Maths tutor

4821 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

'There are two adults and two children in the Adams family. They buy an all-day travel ticket for each person. The price is £8 for each adult and £5 for each child. They also buy 4 ice-creams at £1.95 each. How much do they spend in total?'


Solve the quadratic 3x^2+11x+6=0


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 do i find 30% of 70?


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