which of the following demonstrates how the first 21 on the left side of the triangle is calculated using the combination patter
n?
1 answer:
You might be interested in
Sorry for the hand writing. But you want to factor out a 4y^2 which will result in (9y^2-1). Then you will factor out the equation in parentheses to (3y-1)(3y+1). Don’t forget to put the 4y^2 out front!
