Hello, mcinnes!
Did you make a sketch?
A rectangular garden measures 5m x 4m.
Its area is to be tripled by extending each dimension by the same amount.
How much should each dimension extend? Code:
: - - x+5 - - :
- *-------------* -
x | | :
- *---------* _ * - - - - * | :
: | | : | | | x+4
4 | 20 m² | 4 | | | :
: | | : | | | :
- *---------* - *---------*---* -
: - 5 - : : - 5 - : x :
The original garden is 5 by 4 and has an area of 20 m².
The new garden is by and has an area of 60 m².
There is our equation . . . .
Quadratic Formula: .
The positive root is: .