Still a little bit unsure.......

[Molly]

I know I'm posting a lot of questions, but these quad. euation are a pain. can anyone try their hand at this?

" The fashion magazine prints square photographs in two sizes. the larger photos have two sides 2cm longer than the smaller photographs. The combined area of the three smaller is 12cm^2 more than the larger photgraph. Find the dimentions of each size of photograph"

O.K, so far, i have x ( x+2)= x+12^2.....but that hardly makes sense??? Do i have to include the three in there somewhere, or do I have the right equation? A fast reply would be helpful...thanks.........

 

[Denis]

The fashion magazine prints square photographs in two sizes. the larger photos have two sides 2cm longer than the smaller photographs. The combined area of the three smaller is 12cm^2 more than the larger photgraph. Find the dimentions of each size of photograph.

Molly, I think you typed that WRONG; the only way you can get a neat solution
is smaller are 3 by 3 = 9 and larger are 5 by 3 = 15:
3(9) = 27
15 + 12 = 27

CHECK your wording. If larger is a square, then the wording
" two sides 2cm longer than the smaller photographs" makes no sense...

 

[robbwrr]

they are squares.

so smaller is x^2
larger is (x+2)^2

Now write and solve the equation:
"Three smaller squares is 12 more than one big one"