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OpenStudy (anonymous):
The area of a rectangular painting is given by the trinomial x^2 + 4x – 21. What are the possible dimensions of the painting? Use factoring.
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OpenStudy (anonymous):
A=x^2+7x-3x-21 =x(x+7)-3(x+7) =(x+7)(x-3) so L=(x+7) W=(x-3)
OpenStudy (hoblos):
x^2 + 4x – 21 = (x+7)(x-3) L=(x+7) W=(x-3)
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