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

4605 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

A rectangular frame is made from 5 straight pieces of metal with height 5m and length 12m. One of the pieces of metal goes through the diagonal of the rectangle. The weight of the metal is 1.5 kg per metre. Work out the total weight of the metal


Simplify √48


x^2 - 5x - 12 = 2, solve for x


3/(x-1) - 2/(x+1) = 1 Solve to find the values of x.


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning