SOLUTION: A rectangle whose length is 3cm more than its width has an area of 40 square centimeters. Find the length and the width of this rectangle.

SOLUTION: A rectangle whose length is 3cm more than its width has an area of 40 square centimeters. Find the length and the width of this rectangle.

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Question 250297: A rectangle whose length is 3cm more than its width has an area of 40 square centimeters. Find the length and the width of this rectangle.
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
L=W+3
LW=40
(W+3)W=40
W^2+3W-40=0
(W+8)(W-5)=0
W-5=0
W=5 CM. FOR THE WIDTH
L=5+3=8 CM FOR THE LENGTH.
PROOF:
5*8=40
40=40
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