AboutScotto Expertise Any kind of mathematics (calculus, analysis, game theory, linear approximation, finite differences, linear regression, linear programming, numerical analysis, probability, statistics, etc.).
I also have answered some questions in
Physics (mass, momentum, falling bodies),
Chemistry (charge, reactions, symbols, molecules), and
Biology.
Experience Experience in the area: I have tutored students in all areas of mathematics for over 20 years.
Education/Credentials: BSand MS in Mathematics from Oregon State University, where I completed sophomore course in Physics and Chemistry. I received both degrees with high honors.
Awards and Honors: I have passed Actuarial tests 100, 110, and 135.
Publications Maybe not a publication, but I have respond to well oveer 3000 questions on the PC.
That's around 2,000 in basic math and 1,000 in advanced math.
Education/Credentials I aquired well over 40 hours of upper division courses. This was well over the number that were required.
I graduated with honors in both my BS and MS degree from Oregon State University.
I was allowed to jump into a few junior level courses my sophomore year.
Awards and Honors I have been nominated as the expert of the month several times.
All of my scores right now are at least a 9.8 average (out of 10).
Past/Present Clients My past clients have been students at OSU, students at the college in South Seattle,
referals from a company, friends and aquantenances, people from my church, and people like you.
when i multiply by 2x first i get
24x^4-96x^3+72x^2
when i multiply the parentheses together first i get
12x^3-48x^2+36x
how is this happening? is there a specific rule for when to multiply what? i was under the impression that it doesn't matter what order you do multiplication in.
Answer There are two ways to multiply this problem.
(2x(-3x+3))(-2x+6) or 2x((-3x+3)(-2x+6)).
The first way you did the problem involved multiply both the first and second set of parenthises by 2x. This is only done if the parenthises are added together, as in ((-3x+3) + (-2x+6)), in which case we get an entirely different answer.
Consider 2*(3*5). This is clearly 30. In your first approach to the problem, this would be said to be 2*3 * 2*5 = 6*10 = 60. Looking at the real answer, we can see we multiplied by an extra 2.
