

Multiplication Expressions
Presentation
•
Mathematics
•
6th - 11th Grade
•
Hard
Joseph Anderson
FREE Resource
5 Slides • 4 Questions
1
9/29: Multiply Expressions
Let's include multiplying when rewriting expressions!

2
What We've Seen...
We've seen distributing when combining like terms, but what about when we have to multiply by more than 1 term?
3
Multiple Choice
You know this part! Rewrite (x+2)(x-5) in standard form ax2+bx+c
x2+3x-10
x2-3x-10
2x2-5x
x2-3x+10
4
How'd you do that??
We use the area model (the BOX) to organize those terms and see each term getting distributed to each other term.
We'll continue using this method when multiplying more complicating cases!
5
When it's a little tougher...
We do the same thing!
1a) Set up one expression on the side of the area model
1b) Set up the other expression on the top of the area model
2) Distribute each term to each other term by filling out the area model
3) Combine your like terms! (Remember like=same variable and same power)
6
Let's do a crazy one together!
Write this example down in your notes!
7
Multiple Choice
You try this one! 3x(4x+5)
12x2+15x
12x2−15x
12x+15x=27x
3x(9x)=27x2
8
Multiple Choice
Now try this one! (Draw it in your notes) (x2+5)(x2−11x+6)
x4−6x2−49x+30
x4−11x3+6x2−50x+30
9
Multiple Choice
One more! (x2+4x+3)(2x2−9x+7)
2x4−x3−23x2+10x+21
2x4+17x3+49x2+46x+21
2x4−17x3+23x2+46x+21
9/29: Multiply Expressions
Let's include multiplying when rewriting expressions!

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