Question

can anyone explain me how to do algebra ​

Answer 1

Answer:

hmm by the help of formulas

Step-by-step explanation:

(a + b) 2 = a 2 + b 2 + 2ab.

(a − b) 2 = a 2 + b 2 − 2ab.

a 2 − b 2 = (a − b) (a + b)

(x + a) (x + b) = x 2 + (a + b) x + ab.

(a + b + c) 2 = a 2 + b 2 + c 2 + 2ab + 2bc + 2ca.

(a + (−b) + (−c)) 2 = a 2 + (−b) 2 + (−c) 2 + 2a (−b) + 2 (−b) (−c) + 2a (−c) (a – b – c) 2 = a 2 + b 2 + c 2 − 2ab + 2bc − 2ca.