Answer:
55 + 14
Explanation:
(7 + )²
= (7 + )(7 + )
Each term in the second factor is multiplied by each term in the first factor.
7(7 + ) + (7 + ) ← distribute parenthesis
= 49 + 7 + 7 + 6 ← collect like terms
= 55 + 14
1.6m questions
2.0m answers