Question

what is a requirement for a trinomial to be factored as a perfect quare?

Answer 1

Like
(ax+b)^2 = (ax+b)(ax+b) = a^2x^2 + 2abx + b^2
?

Answer 2

Use your knowledge of
(a + b)² to multiply out (a + b + c)².

Answer 3

thank you everyone =)

Answer 4

Treat as a binomial with as the first term.
Show that it will equal the sum of the squares of each term, plus twice the product of all combinations of the terms.