ty again

Originally Posted by

**Cyprus**
Use a calculator.

1st one, try (12+x) (16+x) = the area, which was 376 or something. then Solve for x.

my friend said it should be 2x since theres 2 sides to the border thing

but i still ended up with:

(12+2x)(16+2x)=376

192 + 24x + 32x + 4x^2 = 376

4x^2 + 56x + 192 = 376

4^2 + 56x - 184 = 0

4(x^2 + 16x - 46) = 0

yeah.. i also tried it this way..

(12+2x)(16+2x)=376

192 + 24x + 32x + 4x^2 = 376

4x^2 + 56x + 192 = 376

4x^2 + 56x = 184

4x(x+14) = 184

x = 46/x - x

is there like a math forum somewhere so i stop bothering bg forums?