Hi again Kath;
HAPPY THANKSGIVING!
You are like me. When I was in school, the Holidays were an opportunity to catchup on homework. I never learned how to baste a turkey. Larry is doing all of the cooking today. I cannot even make the frozen corn.
(5x + 3)(x4)
First, I would like to correct your English. These are not brackets. Brackets are [ and ]. These are parentheses. We have to resolve two parenthetical equations.
Let's FOIL...
FIRST...(5x)(x)=5x^{2}
OUTER...(5x)(4)=20x
INNER...(3)(x)=3x
LAST...(3)(4)=12
You may already know that a negative number multiplied by a positive number results in a negative number.
Therefore...
5x^{2}20x+3x12
5x^{2}17x12
(2x1)^{2}
This is...
(2x1)(2x1)
Let's FOIL...
FIRST...(2x)(2x)=4x^{2}
OUTER...(2x)(1)=2x
INNER...(1)(2x)=2x
LAST...(1)(1)=1
4x^{2}2x2x+1
4x^{2}4x+1
11/28/2013

Vivian L.
Comments