Question

3) Write expansion formulae { ( a + b ) 2 , ( a – b) 2

,a2 – b

2

, ( a+ b)3

, ( a-b)3

,a3 – b

3

, a3 + b3

}​

Answer 1

Answer:

(a+b)2=a2+2ab+b2

(a-b)2=a2-2ab+b2

(a2-b2)=(a+b)(a-b)