Question

Do the given sums :-. (a+b)2 =. (a-b)2 = (a+b)3 =. (a-b)3 =​

Answer 1

Step-by-step explanation:

1]. (a+b)²

(a+b)(a+b)

a²+ab+ab+b²=a²+2ab+b²

2] (a-b)²

(a-b)(a-b)

a²-ab-ab+b²=a²-2ab+b²

3] (a+b)³

(a+b)(a²-ab+b²)

4]. (a-b)³

(a-b)(a²+ab+b²)

Answer 2

Answer:

1]. (a+b)²

(a+b)(a+b)  

a²+ab+ab+b²=a²+2ab+b²  

2] (a-b)²

(a-b)(a-b)  

a²-ab-ab+b²=a²-2ab+b²  

3] (a+b)³  

(a+b)(a²-ab+b²)  

4]. (a-b)³  

(a-b)(a²+ab+b²)

Step-by-step explanation:

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