Question

expand the formula (a+b)^2,(a-2)^2,(a+b)(a-b)​

Answer 1

Step-by-step explanation:

(a + b + c)2 = a2 + b2 + c2 + 2(ab + bc + ca) ... 8. a3 + b3 = (a + b)(a2 − ab + b2). 9. an − bn = (a − b)(an−1 + an−2b +