Spud has a problem. He knows that the solutions for a quadratic equation are
Alexia says, “Look, just remember when we made polynomials. If you wanted
and to be the answers, you just used . So you just do x minus the first one times x minus the other.” Use to find the quadratic expression.
Use a generic rectangle.
Hugo says, “No, no, no. You can do it that way, but that's too complicated. I think you just start with
and work backward. So , then, hmmm. Yeah, that'll work.” Try Hugo's method.
Which way do you think Spud should use? Explain your choice.
Which do you think is more efficient? Which helps you understand the most?