Question

a. (a+b)2.
b. (a-b )2
c. (a+b)(a - b). d. (x +a) (x+ b)​

Answer 1

Step-by-step explanation:

(a+b)²=a²+b²+2ab

(a-b)²=a²+b²-2ab

(a+b)(a-b)=a²-b²

(x+a)(x+b)=x²+(a+b)x+ab