Question

a) Verify the identify i) (a+b) (a-b) = a^2+b^2
taking a=5 b=2​

Answer 1

Step-by-step explanation:

(a+b) (a-b) =a²-b²

first

LHS RHS

(a+b) (a-b) a²-b²

(5+2)(5-2) 5²-2²

(7)(3) 25-4

21 21

RHS=LHS

if in your questions

(a+b) (a-b) =a²+b²

then this is wrong

and right answer is

(a+b) (a-b) =a²-b²

Answer 2

Step-by-step explanation:

a) Verify the identify i) (a+b) (a-b) = a^2+b^2

taking a=5 b=2