The expression (12.86 × 12.86 + 12.86 × p + 0.14 × 0.14) will be a perfect square for p equal to
Pick: A) 0.28 B) 0.26 C) 1 D) 0 E) 2
Explanation :   12.86 × 12.86 + 12.86 × p + 0.14 × 0.14 = (12.86)2 + 12.86 × p + (0.14)2   This can be written as (12.86 + 0.14)2 = 132, if 12.86 × p = 2 × 12.86 × 0.14   i.e., if p = 2 × 0.14 = 0.28   Hence, p = 0.28 . 0.28nswer : Option 0.28
<result>A</result>
The expression (12.86 × 12.86 + 12.86 × p + 0.14 × 0.14) will be a perfect square for p equal to