Question

expand each of the following using suitable identies
(¼a-½b+1)²​

Answer 1

• Step-by-step explanation:

( a - ²b + 1 ) ²

= ( ( a ) + ( - ; b ) + 1 ) ²

Using ( x + y + 2 ) ² = x² + y² + z² + 2xy + 2yz + 2zx

Where x = = ( a ) ² + ( - b ) ² + ( ¹7² + 2 ( a ) ( b ) + 2 ( b ) ( 1 ) +2 ( a ) ( 1 ) = a² + ²b² + 1 - ab - b + a