Mathematics
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OpenStudy (anonymous):
Choose the correct simplification of the expression (d3)5
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OpenStudy (anonymous):
d8
d15
d243
d
jimthompson5910 (jim_thompson5910):
assuming this is (d^3)^5, you would multiply the exponents
jimthompson5910 (jim_thompson5910):
because something like (d^3)^2 = d^(3*2) = d^6
OpenStudy (anonymous):
d^6 isnt an option
jimthompson5910 (jim_thompson5910):
that's just an example
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jimthompson5910 (jim_thompson5910):
sorry should have said that
OpenStudy (anonymous):
oh i got d8.. is that right?
jimthompson5910 (jim_thompson5910):
the exponents are 3 and 5, they multiply to ???
jimthompson5910 (jim_thompson5910):
you don't add them, you multiply them
OpenStudy (anonymous):
15
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OpenStudy (anonymous):
so its d15
jimthompson5910 (jim_thompson5910):
yep
OpenStudy (anonymous):
Choose the correct simplification of the expression (3x)4
OpenStudy (anonymous):
its a small four on the top of the 3
jimthompson5910 (jim_thompson5910):
(3x)^4 = (3^4)*x^4
(3x)^4 = 81x^4
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OpenStudy (anonymous):
Choose the correct simplification of the expression (x2y)2.
jimthompson5910 (jim_thompson5910):
(x^2)^2 = ???
OpenStudy (anonymous):
4? @jim_thompson5910
jimthompson5910 (jim_thompson5910):
x^4 actually
jimthompson5910 (jim_thompson5910):
so
\[\Large (x^2y)^2 = x^4y\]
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OpenStudy (anonymous):
x4y3
x6y6
x4y2
xy4
OpenStudy (anonymous):
those r all the options @jim_thompson5910
jimthompson5910 (jim_thompson5910):
oh sry, i meant to say
\[\Large (x^2y)^2 = x^4y^2\]