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Mathematics
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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
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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???
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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.
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OpenStudy (anonymous):
So A.
pooja195 (pooja195):
Yes
pooja195 (pooja195):
\[\huge ~-x(6x - 7)\]
pooja195 (pooja195):
Distribute the -x
OpenStudy (anonymous):
D?
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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?
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OpenStudy (anonymous):
@pooja195 Would the answer be A?
pooja195 (pooja195):
yep :)
OpenStudy (anonymous):
Thank you so much.
pooja195 (pooja195):
:)
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