SOLUTION: I have a word problem that says: A rectangular scrapbook page has an area of 180 inches squared. If the length of the page is two less than twice the width, find the width of the p

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons -> SOLUTION: I have a word problem that says: A rectangular scrapbook page has an area of 180 inches squared. If the length of the page is two less than twice the width, find the width of the p      Log On


   

Question 205158: I have a word problem that says: A rectangular scrapbook page has an area of 180 inches squared. If the length of the page is two less than twice the width, find the width of the page.
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
L*W=180
L=2W-2
(2W-2)W=180
2W^2-2W-180=0
2(W^2-W-90)=0
2(W-10)(W+9)=0
W-10=0
W=10 ANS.
L=2*10-2
L=20-2
L=18 ANS.
PROOF
18*10=180
180=180