Complete the identity

Exercise and reference answers

Missing parts

1. Answer

   2ab

   Choices

   1. 2ab
   2. ab
   3. b2

2. Answer

   minus

   Choices

   1. minus
   2. plus
   3. times

Complete the statement

(a + b) squared equals a2 + {0} + b2, and (a - b) squared equals a2 {1} 2ab + b2.

Instructions

Drag a term into each gap to finish the identity.

Explanation