Exploring Adding and Subtracting Rational Expressions

What is the result of multiplying x by x?

• x

• 2x

• x^2

• 2x^2

What do you get when you multiply x by 5?

• 5x

• x^2

• 10x

• 5x^2

What is the result of multiplying -7 by -3?

• 21

• -21

• 10

• -10

When factoring trinomials of the form x^2 + bx + c, what must the two integers do?

• Add to b and multiply to c

• Add to c and multiply to b

• Multiply to b and subtract from c

• Subtract to b and multiply to c

What is the final step in checking if your factored trinomial is correct?

• Factoring again

• Multiplying the binomials

• Adding the coefficients

• Subtracting the terms

Which set of numbers multiplies to 12 and adds up to 7?

• 3 and 4

• 12 and 1

• 6 and 2

• 2 and 5

Which pair of numbers adds up to 9 and multiplies to 20?

• 9 and 2

• 20 and 1

• 10 and 2

• 5 and 4

For a trinomial with a negative term, if b is positive, which number should be positive?

• The smaller number

• Both numbers

• Neither number

• The larger number

If one of the factors is negative, what must be true for the product to be negative?

• Both factors are negative

• The smaller factor is negative

• Both factors are positive

• The larger factor is negative

For the homework, what types of problems are students asked to try?

• Multiplying polynomials

• Factoring trinomials with both positive and negative terms

• Solving quadratic equations

• Graphing linear equations