L=3W
(L-2)(W+5)=90
(3W-2)(W+5)=90
3W2+13W-100=0
(3W+25)(W-4)=0
W=4
L=12
and the other root is extraneous.
Anabelle G.
asked • 01/25/22please solve by factoring
Originally, a rectangle was three times as long as it was wide. When 2 cm were subtracted from the length and 5 cm were added to the width, the resulting rectangle had an area of 90 cm^2. Find the dimensions of the new rectangle.
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