Post a New Question

math

posted by on .

how would you factorise

a) 9x^2 - 49

b) 9x^2 - 121

c) 49x^2 - 25x^2

thankyou

  • math - ,

    Look up "difference of squares"
    Each of your questions is a basic example of that type.

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question