# RATL 2 | Lesson 3 | Standards

### Core Content Standards

CCSS.Math.Content.HSA.APR.D.7 (+) Understand that rational expressions form a system analogous to the rational numbers, closed under addition, subtraction, multiplication, and division by a nonzero rational expression; add, subtract, multiply, and divide rational expressions.

### Related Standards

CCSS.Math.Content.HSA.APR.D.6 Rewrite simple rational expressions in different forms; write $$\Large \frac{a(x)}{b(x)}$$ in the form $$q(x)+\Large\frac{r(x)}{b(x)}$$, $$a(x)$$, $$b(x)$$, $$q(x)$$, and $$r(x)$$ are polynomials with the degree of $$r(x)$$ less than the degree of $$b(x)$$, using inspection, long division, or, for the more complicated examples, a computer algebra system.

### Standards for Mathematical Practice

CCSS.Math.Practice.MP1 Make sense of problems and persevere in solving them.

CCSS.Math.Practice.MP3 Construct viable arguments and critique the reasoning of others.

CCSS.Math.Practice.MP8 Look for and express regularity in repeated reasoning.