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Mathematics 8 Online
OpenStudy (elise_a18):

The product of (a + b)(a - b) is a2 - b2. Sometimes Always Never

OpenStudy (anonymous):

What do you think?

OpenStudy (elise_a18):

either sometimes or always

OpenStudy (anonymous):

Well, if we multiply two things together, we will always get the same thing..

OpenStudy (anonymous):

It'll always be the same. 2 * 2 = 4 2 * 2 will always be 4.

rvc (rvc):

do it separately and check @Elise_a18

rvc (rvc):

\[a(a-b)+b(a-b)\]

rvc (rvc):

what do you get now

OpenStudy (elise_a18):

okay so it's Always then?

rvc (rvc):

what are you getting? solve it

OpenStudy (elise_a18):

I'll go with Always. I'm only looking for the answer, that's all :/

rvc (rvc):

\[a^2-ab+ab-b^2\]=\[a^2-b^2\]

rvc (rvc):

now tell when will this occur always?

rvc (rvc):

yep! u correct :) always :)

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