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OpenStudy (anonymous):
All of the following are equivalent, except _____. (12 + 3)x (12 + 3x)x 15x 12x + 3x
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OpenStudy (mathmale):
( ) in this context, preceded or followed by x, indicates required multiplication. Try multiplying out the first two expressions before comparing the results with the second two expressions.
OpenStudy (anonymous):
anything times 1 is itself
OpenStudy (simplymarie_x):
(12 + 3)x = 3x + 12x = 15x 12 + 3x)x = 3x^2 + 12x 15x = 15x 12x + 3x = 15x So out of which of those isn't the same?
OpenStudy (anonymous):
whats the answer to b?
OpenStudy (simplymarie_x):
The answer to b is 3x^2 + 12x. Thats as much as it simplifies to
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OpenStudy (anonymous):
oh ok thx
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