Find the number that must be added to each expression to form a perfect square trinomial. Then write the trinomial as a binomial
2 answers:
<h2>
Hello! </h2>
The answers are:
a)
b)
<h2>Why?</h2>
First, we need to know that for this case:
So,
We must add to the expression in order to form a perfect square trinomial,
Writing the trinomial as a binomial square :
Have a nice day!
Answer:
49/4 is the number.
Step-by-step explanation:
We have given the expression:
x²+7x+?
We have to find the number that must be added to form a perfect square trinomial.
(x+7/2)² = x+2(x)(7/2)+(7/2)²
(x+7/2)²
To form the expression perfect square 49/4 is added.
(x+7/2)² = x+2(x)(7/2)+(7/2)²= x+7x+49/4
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