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OpenStudy (anonymous):
please help! the area of a rectangular painting is given by the trinominal x^2 + 4x - 21. what are the possible dimensions of the painting? use factoring a. (x+7) and (x+3) b. (x-7) and (x+3) c. (x-7) and (x-3) d. (x+7) and (x-3)
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OpenStudy (anonymous):
PLEASE HELP
OpenStudy (anonymous):
B ?
OpenStudy (isaiah.feynman):
Factor that trinomial, the factors are the dimensions!
OpenStudy (anonymous):
Would it be B?
OpenStudy (anonymous):
@Isaiah.Feynman
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OpenStudy (isaiah.feynman):
The fastest way is to factor the trinomial once and the answer will pop and you will be sure of it.
OpenStudy (isaiah.feynman):
|dw:1387505817068:dw|
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