Question
(07.03 MC) Given the following perfect square trinomial, find the missing term: __ x^2+40x+100 1 1 2 4 10
Solution
4
(202 Votos)
Ester
Mestre · Tutor por 5 anos
Resposta
The missing term in the trinomial is
.
Explicação
## Step 1A perfect square trinomial is a trinomial that can be factored into the square of a binomial. In this case, we are given the trinomial
, and we are asked to find the missing term that would make this a perfect square trinomial.## Step 2The general form of a perfect square trinomial is
, which can be factored into \((a+b)^{2}\).## Step 3In our given trinomial,
corresponds to
, and
corresponds to
. Therefore,
is
and
is
.## Step 4The middle term of the trinomial,
, corresponds to
in the general form. Therefore, we can set up the equation
.## Step 5Substituting
and
into the equation, we get
, which simplifies to
.## Step 6Solving for
, we find that
. Therefore, the missing term in the trinomial is
.