Question

Expand each of the following using suitable identity:
(i) (x+2y+4z)²
(ii) ( 2x - y+z)²
(iii) (-2x+3y2z)²
(iv) (3a-7b-c)²
(v) (-2x+5y-3z)²
(VI) (¼a - ½b + 1)²

Answer 1

Take first two elements as a and last element as b and solve in the formula

(a-b)2 or (a+b)2