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Mathematics 8 Online
OpenStudy (anonymous):

PLEASE HELP ASAP! 17. 7r^4 * 7r^4 A. 49t^8 B. 14t^4 C. 49t^16 D. 14t^8 18. -x(6x - 7) A. -6x^2 + 7x B. 5x^2 - 6x C. 6x + 7x D. -6x - 7x

pooja195 (pooja195):

1) Simplfy it whats 7*7=?

OpenStudy (loser66):

but how the options are all t, not r?

pooja195 (pooja195):

@skyv ??

OpenStudy (anonymous):

That's how it is. Sorry.

OpenStudy (loser66):

really???

OpenStudy (anonymous):

Yes.

OpenStudy (anonymous):

Oh and 7*7 is 49.

OpenStudy (loser66):

@pooja195

pooja195 (pooja195):

good so now just ADD the exponents :) 4+4=????????????

OpenStudy (anonymous):

8.

OpenStudy (anonymous):

So A.

pooja195 (pooja195):

Yes

pooja195 (pooja195):

\[\huge ~-x(6x - 7)\]

pooja195 (pooja195):

Distribute the -x

OpenStudy (anonymous):

D?

OpenStudy (anonymous):

@pooja185 Is it D?

OpenStudy (anonymous):

@pooja195 Is the answer D? Sorry.

pooja195 (pooja195):

Not quite

pooja195 (pooja195):

-x * x would be -6x^2

pooja195 (pooja195):

So which is it?

OpenStudy (anonymous):

@pooja195 Would the answer be A?

pooja195 (pooja195):

yep :)

OpenStudy (anonymous):

Thank you so much.

pooja195 (pooja195):

:)

pooja195 (pooja195):

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