Answer:
Linear expression
Step-by-step explanation:
First, simplify the expression.
Given expression:
Collect like terms:
Combine like terms:
As each term of the expression is either a numeric constant or a variable with no exponent, this is a <u>linear expression</u>.
It can also be called a <u>binomial expression</u> since the expression only contains two terms (the constant and the variable).
For this case we have that by definition, the discriminant of a quadratic equation , is given by:
: Two different real roots
: Two equal real roots
: Two different complex roots
If we have , then:
Substituting the values:
Thus, we have two equal real roots.
ANswer:
We have two equal real roots.