Question

Mention the two rules to determine whether the trinomial is a perfect square.​

Answer 1

Answer

multiply the two square roots together and then by two. You should get the positive or negative version of the other term. Once again, if this is not the case, you do not have a perfect square trinomial.

For example, in the trinomial x2 - 12x + 36, both x2 and 36 are perfect squares.