# MPM1D Multiplying Polynomials by Monomials 2017-10-03

Here’s what we learned today – we’re just applying the distributive property again, but it’s important that we practise the skill. I’m posting this a bit late, but remember that you should have spent 15-20 minutes on these tonight.

09 – Multiplying Polynomials by Monomials

# MDM4U Probability with equally-likely outcomes 2017-10-02

When each outcome in a sample space is equally likely,

$P(x)=\frac{1}{n(S)}$

for each $x \in S$.

For any event $A \subseteq S$,

$P(A) = \frac{n(A)}{n(S)}$

We often say something like, “We get the probability by counting the number of ways the event can happen and dividing by the number of ways anything can happen.”

For homework complete Page 325 #6, 9, 10.

# MPM1D Working with Polynomials 2017-10-02

We’ve learned how to multiply monomials, such as:

$3x^2(-4xy^2)=-12x^3y^2$

(page from that day: 06 – Multiplying Monomials)

$-5x(3x^2-8) = -15x^3+40x$

Today we worked on Fractice and then practised adding and subtracting polynomials, such as:

$(3x^2+4x)-(-2x^2+5)=5x^2+4x-5$

Here’s the homework for tonight: 08 – Adding and Subtracting Polynomials

Tomorrow we’ll be multiplying polynomials by other polynomials. Should be fun :)

# MDM4U Introduction to Probability 2017-09-26

We started to talk about probability today. We saw that playing the lottery doesn’t seem like a great idea, and we learned a bunch of notation and terms. Here’s a summary, along with a couple of things we’ll be starting with tomorrow.

01 – Introduction to Probability

# MPM1D Exponent Laws 2017-09-26

We started learning about the Exponent Laws today (we didn’t quite finish). Here’s a note to go along with our learning today (including a bunch of practice work).

05 – Exponent Laws

# MPM1D More Sub & Eval practice 2017-09-21

We spent some time looking at parts e) and f) from your first quiz, then we practised a bit more substituting-and-evaluating. Picture Day took up the last half hour of class, though, so no homework tonight :)