Simplify Rational Expressions

How do you factor x^2 - 16?

• (x + 4)(x + 4)

• (x - 4)(x - 4)

• (x + 4)(x - 4)

• (x - 4)(x + 4)

Tags

CCSS.HSA.APR.C.4

What should you do when you encounter an expression like 5 - x over x - 5?

• Add 5 to both terms

• Multiply by x

• Factor out a negative one

• Cancel directly

Tags

CCSS.HSA.APR.D.6

How do you factor the expression x^2 - 8x + 15?

• (x + 5)(x - 3)

• (x - 3)(x - 5)

• (x + 3)(x + 5)

• (x - 5)(x + 3)

What is the GCF of the numerator in the expression 5x^2 - 15x?

• 15

• 5x

• 15x

• 5

What is the result of factoring 2x^2 - 5x - 3?

• (2x + 1)(x - 3)

• (2x - 1)(x + 3)

• (2x - 3)(x + 1)

• (2x + 3)(x - 1)