Multiply out (either with an area model or distribution) the four pairs of binomials below. You should do them on your own paper; you'll want to be able to look back at them to answer the questions below.
Remember that quadratics often have the form:
In these examples, the "a" value is 1.
When both numbers (the 9 and 5 in the example above) are positive, what is true about the "b" and "c" values?
When the "bigger" number (9 in this case) is negative and the smaller number (5) is positive, what is true about the "b" and "c" values?
When the "bigger" number (9 in this case) is positive and the smaller number (5) is negative, what is true about the "b" and "c" values?
When both numbers are negative, what is true about the "b" and "c" values?
What two numbers multiply to equal 20 and add to equal 12?
What two numbers multiply to equal -30 and add to equal -1
What two numbers multiply to equal 30 and add to equal -13
Factor the equation below.
Factor the equation below.
Factor the equation below.
Factor the quadratic.
Factor the quadratic.
Factor the quadratic.
Factor the quadratic.
Factor the quadratic.
Factor the quadratic.