Question

which is true for all values of the variables in the equality. The following are
the standard identities:
i. (a+b)2
= a2+2ab+b2
ii. (a-b)2
= a2
-2ab+b2
iii. (a+b)(a-b) = a2
-b2
iv. (x+a)(x+b) = x2+(a+b)x+ab

Answer 1

Answer:

Above are algebric expressions, bellow are answers:

1) True

2) True

3) True

4) false

Answer 2

Answer:

(a+b) (a-b) =a²-b²

Step-by-step explanation:

(a+b) (a-b) =a²-b²

=a(a-b) + b(a-b)

=a²- ab + ba - b²

=a²- b²