Answer:
(y² + 7)(y² + 7)
Step-by-step explanation:
Check: Use the FOIL method. FOIL = First, Outside, Inside, Last, and is the order in which you multiply:
(y²)(y²) = y⁴
(y²)(7) = 7y²
(7)(y²) = 7y²
(7)(7) = 49
Simplify. Combine like terms:
y⁴ + (7y² + 7y²) + 49 = y⁴ + (14y²) + 49
Your answer:
(y² + 7)(y² + 7)
