7
QuizMultiple Choice

Adding and Subtracting Rational Expressions — Quiz

Question 7 • Mathematics III

What is the difference? the fraction with numerator x and denominator x squared plus 3 x plus 2 minus the fraction with numerator 1 and denominator open paren x plus 2 close paren times open paren x plus 1 close paren

Answer
A
the fraction with numerator 1 and denominator x plus 2
B
the fraction with numerator x minus 1 and denominator x squared plus 3 x plus 2
C
the fraction with numerator negative 1 and denominator 4 x plus 2
D
the fraction with numerator x minus 1 and denominator 6 x plus 4

Explanation

Factor the first denominator: x² + 3x + 2 = (x + 1)(x + 2). The fractions then have the same denominator, so subtract their numerators: x − 1. The difference is (x − 1)/(x² + 3x + 2), which is choice B.

AI-written and checked against the verified answer.

Previous
Next