Question 982903
Negative numbers are just how to extend measures to the left of zero on a number line; instead of having only numbers that increase to the right on zero on the number line.  The properties of ADDING and MULTIPLYING are the same for all numbers on the number line.


{{{y^2-2y+3=(y+r)(y+s)}}}


What are r and s?


{{{(y+r)(y+s)}}}
{{{y^2+ry+sy+rs}}}
{{{y^2+(r+s)y+rs}}}


Work backward from your trinomial expression to find the numbers r and s which work.

ANSWER: {{{highlight((y+1)(y-3))}}}