Question

Factorise: (a-5)² - (a - 8)²​

Answer 1

Answer:

(a-5) sq

a sq + 5 sq - 2a5

a sq + 25 - 10a

(a-8) sq

a sq + 8 sq - 2a8

a sq + 64 - 16a

39-26a

Answer 2

Step-by-step explanation:

(a-5)^2-(a-8)^2

=(a-5+a-8)(a-5-a+8) a^2-b^2=(a+b)(a-b)

=(2a-13)3

=3(2a-13)