Question

write identies of (a+b+c)2, (a+b)3, a3+b3, (x+a) (x-b), a3+b3+c3-3abc​

Answer 1

Step-by-step explanation:

1. (a+b+c)2 = (a - b - c)2 = a2 + b2 + c2 - 2ab + 2bc - 2ca.
2. (a+b)3 = a3+b3+3ab(a+b) .
3. a3+b3 = (a+b)(a2-ab+b2) .
4. (x+a) (x-b) = x 2 + ( a − b ) x − a b .
5. a3+b3+c3-3abc = (a + b + c)(a2 + b2 + c2 - ab - bc - ac) 13.

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