Multiply out and simplify (x+7)(x-3)

Using FOIL (First, Outside, Inside, Last), we get:F: x2O: -3xI: 7xL: -21Adding these together gives x2 + (-3x) + 7x + (-21)Which is the same as x2 - 3x + 7x - 21Which simplifies to x2 + 4x - 21

GR
Answered by Glen R. Maths tutor

4181 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Find the value(s) of x which satisfies the equation 3x^2 + 6x + 3 = 0


Solve the simultaneous equations x^2 +8y=20 and y=x+4


How do you solve a quadratic equarion


Solve the simultaneous equations: 3x + 4y = 5 , 2x - 3y = 9


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