itstito14

Find the product.
(2x – 3)(3x + 3)

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myininaya

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|dw:1402530564245:dw|

myininaya

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|dw:1402530581394:dw|
multiply this as a first step

myininaya

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2x(3x)=?

itstito14

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6x^2

myininaya

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good
now as a second step we will do the outer part
which is 2x(3)|dw:1402530668986:dw|

itstito14

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6x

myininaya

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great
now lets move to the inner part
which is -3(3x)|dw:1402530729561:dw|

itstito14

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-9x

myininaya

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awesome now the last part is to multiply -3(3)
|dw:1402530787631:dw|

itstito14

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-9

myininaya

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now we will just add all the terms you just told me together
which is
6x^2+6x-9x-9
And you would be done if you didn't have like terms but you do

myininaya

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so combine the like terms

myininaya

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you only have two terms that are like terms

itstito14

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yes

itstito14

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36x^2

itstito14

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for the like terms

myininaya

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oh no..
I was talking adding 6x and -9x

itstito14

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6x^2-3x-9

myininaya

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you have 6x^2+6x-9x-9
the only terms that are like terms are the two terms that have the same variable part
which is the term 6x and the term -9x
What do you get when you add 6x and -9x?
6x+(-9x)
or you could say
6x-9x
or you could say
-(9-6)x
what is 9-6?

myininaya

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oh you got it

myininaya

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gj

itstito14

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k thank u

itstito14

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yah