Answer :
Answer:
[tex]{a}^{2} - {b}^{2} [/tex]
Step-by-step explanation:
(a + b) (a -b) Open the brackets by multiplication
= a (a -b) + b (a -b)
[tex] = {a}^{2} - ab + ab - {b}^{2} [/tex]
[tex] = {a}^{2} + 0 - {b}^{2} [/tex]
[tex] = {a}^{2} - {b}^{2} [/tex]
