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I can't listen to the lesson quietly. I fucked my colleague during online classes

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發佈者 Sexycikas

Video Transcription

y cubed times y to the fourth power is y to the seventh, since 3 plus 4 is 7.

So let's try some examples.

Transform 5x cubed y to the fourth times 7x squared y to the eighth.

And then 3xy squared times 5x cubed y.

And also 4x to the fourth y to the ninth of 3 times 5x to the third y to the ninth of fifth.

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So 5 times 7 is 35.

x cubed times x squared is x to the fifth power.

And 4y to the fourth times y to the eighth of 4 plus 8 is 12, so it's y to the twelfth power.

Now let's go ahead and make some space.

Let's get rid of that stuff.

Let's move this over here.

3 times 5 is 15.

Now what is x times x cubed?

If you don't see an x point, there is an invisible one.

So it's really 1 plus 3, so it's x to the fourth.

And here this is y squared times y to the first power.

2 plus 1 is 3, so that's going to be y cubed.

Now let's try the last example.

So let's multiply 4 times 5, which is 20.

And then x to the fourth times x to the third, that's x to the seventh power.

And then y to the negative 3 times y to the negative 5.

Negative 3 plus negative 5 is negative 8.

But since we have a negative x point, we can move it to the bottom.

So it's 20x to the seventh divided by y to the eighth power.

So we talked about multiplying on ovals.

We said that x to the fourth times x to the fifth is x to the ninth, because 4 plus 5 is 9.

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