Question

Sum of a – b + ab, b + c – bc and c – a – ac is ______.

विकल्प

• 2c + ab – ac – bc

• 2c – ab – ac – bc

• 2c + ab + ac + bc

• 2c – ab + ac + bc

Answer 1

Sum of a – b + ab, b + c – bc and c – a – ac is 2c + ab – ac – bc.

Explanation:

Required sum = (a – b + ab) + (b + c – bc) + (c – a – ac)

= a – b + ab + b + c – bc + c – a – ac

= 2c + ab – ac – bc  ...[Adding the like terms and retaining others]