Rewrite it in the form a^2 + 2ab + b^2, where a = y^2 and b = 6
(y^2)^2 + 2(y^2)(6) + 6^2
Use the Square of Sum: (a + b)^2 = a^2 + 2ab + b^2
(y^2 + 6)^2
6.5m questions
8.7m answers