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OpenStudy (anonymous):
sqrt9b^3 - sqrt25b^3+ sqrt49b^3
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OpenStudy (hoblos):
sqrt(9b^3) = sqrt(3^2 * b^2 * b ) = (3b)sqrt(b)
OpenStudy (hoblos):
can you try doing the same for sqrt25b^3 and sqrt49b^3 ??
OpenStudy (anonymous):
ok
OpenStudy (hoblos):
tell me what you get so that i can check it for you ;)
OpenStudy (anonymous):
5sqrt5b
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OpenStudy (hoblos):
sqrt25b^3 = (5b)sqrt(b)
OpenStudy (hoblos):
do you understand how im doing that?
OpenStudy (anonymous):
ok
OpenStudy (hoblos):
so what is sqrt49b^3 ?
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